Savory - Arachnida 1977

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112 II. DE ARACHNIDIS Sub-class Opi1ionomorphae Infra-class Trigonotarboidea Super-order Trigonotarboides Order 8 Trigonotarbi Super-order Anthracomartoides Order 9 Anthracomarti Order I 0 Haptopoda Infra-class Opilionoidea Cohort Ricinu1iaceae Order 11 Ricinu1ei Cohort Opilionaceae Super-order Opi1ionoides Order 12 Opi1ioncs Order 13 Cyphophthalmi Super-order Acaroides Order 14 Acari Cohort .~rachitarbaceae Order 15 Architarbi Sub-class Che1onethomorphae Order 16 Pseudoscorpiones Order 17 So1ifugae Ill. PROLES ARACHNES
13 The Order Scorpiones [Scorpionides Latreille, 1817; Scorpiones Hemprich, 1826; Scorpiides Koch, 1837; Scorpionida Pearse, 1936] <strong>Arachnida</strong> size in which the prosoma by an undivided carapace bearing two median and two to qf lateral tryes. The opistlwsoma is markedly divisible into a me so soma of seven (or somites with that are broader than long, and a metasoma of five quadrate or cylindrical somites, forming the "tail". There is no pedicel. A telson is in the form of a poison-bearing sting. The chelicerae are small, of three segments, chelate. The pedipalpi are characteristically large and powerful, and are of six segments, chelate. The legs are of seven segments, without sub-articulations, and the tarsi carry two clazcs. The sternum is triangular or pentagonal. The second opistlzosomatic bears a pair of combs or pectines. Four pairs of book-lungs open on the third, fourth, fifth and sixth stemites. The prosoma of the scorpions is uniformly coven·d with a hard cephalic shield or carapace, its width equal to or nen greater than its length. There are no extensive traces of the primitive segmentation. There is a median furrow in the middle of the carapace, running from behind the eyes to the posterior where it widens to form a triangular • depression: this is an uncommon feature among the primitive orders of <strong>Arachnida</strong> (Fig. 28). The median eyes are placed close on a low ocular tubercle usually some way from the anterior border of the carapace, but genera occur in which its position is either farther forward or farther back than the normal. The lateral eyes form groups of two, three, four or fi\·e small ocelli almost equal in size. A few scorpions are blind. Although the eyes are outwardly similar they difier in development. The median eyes are derived from two layers of hypodermis and are therefore
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Arachnida THEODORE SAVORY 2nd editi
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Contents Preface Acknowledgements .
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MAIAE CARISSIMAE UXORI SECUNDAE LIB
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1 The Phylum Arthropoda The phylum
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6 I PROLEGOMENA The comparison impl
Page 11 and 12: 10 I. PROLEGOME);A one time so rare
Page 13 and 14: 14 I. PROLEGOMENA The most striking
Page 15 and 16: 18 U. DE ARACHNIDIS it, move to a f
Page 17 and 18: 3. MORPHOLOGY: EXTERNAL APPEARANCE
Page 19 and 20: 26 II. DE ARACHNIDIS 3. MORPHOLOGY;
Page 21 and 22: 30 II. DE ARACHNIDIS yet arachnolog
Page 23 and 24: 34 II. DE ARACHNlDIS curved. It oft
Page 25 and 26: 38 II. DE ARACHNIDIS 4. PHYSIOLOGY:
Page 27 and 28: 42 II. DE ARACHNIDIS fibres run upw
Page 29 and 30: 46 II. DE ARACH~IDIS As a rule the
Page 31 and 32: 50 11. DE ARACHNIDIS (iii) Inversio
Page 33 and 34: 54 II. DE ARACHNIDIS FIG. 21. Newly
Page 35 and 36: 58 II. DE ARACHNIDIS Pseudoscorpion
Page 37 and 38: 62 11. DE ARACHNIDIS of the exoskel
Page 39 and 40: 66 II. DE ARACHNIDIS Sometimes the
Page 41 and 42: 70 II. DE ARACHNIDIS using a scanni
Page 43 and 44: 74 II. DE ARACHNIDIS constitutes th
Page 45 and 46: 78 II. DE ARACHNIDIS think of Arach
Page 47 and 48: 82 II. DE ARACH::-.;IDIS declined t
Page 49 and 50: 86 II. DE ARACHNIDIS .Man is the on
Page 51 and 52: 90 11. DE ARACHNIDIS Autecology con
Page 53 and 54: 11. PHYLOGENY: EVOLUTION 95 11 Phyl
Page 55 and 56: 98 II. DE ARACHNIDIS An obvious ass
Page 57 and 58: 102 II. DE ARACHNIDIS start preserv
Page 59 and 60: 106 II. DE ARACHNIDIS Here are thre
Page 61: 110 11. DE ARACHNIDIS Araneae, and
Page 65 and 66: 118 Ill. PROLES ARACHNES 13. THE OR
Page 67 and 68: 122 III. PROLES ARACHNES CLASSIFICA
Page 69 and 70: 126 III. PROLES ARACHNES 14. THE OR
Page 71 and 72: 130 Ill. PROLES ARACHXES The lowly
Page 73 and 74: 134 Ill. PROLES ARACHNES to be seen
Page 75 and 76: 16. THE ORDER SCHIZOMIDA 139 16 The
Page 77 and 78: 142 Ill. PROLES ARACHKES power, an
Page 79 and 80: 146 III. PROLES ARACHNES DISTRIBUTI
Page 81 and 82: 150 III. PROLES ARACHNES chelicerae
Page 83 and 84: 154 Ill. PROLES ARACHNES FIG. 53. S
Page 85 and 86: 158 Ill. PROLES ARACHNES (vi) Lobed
Page 87 and 88: 162 III. PROLES ARACHNES is found i
Page 89 and 90: 166 III. PROLES ARACHNES 4 (3) Chel
Page 91 and 92: 20. THE ORDER TRIGONOTARBI 171 20 T
Page 93 and 94: 174 Ill. PROLES ARACHNES 22 The Ord
Page 95 and 96: 178 III. PROLES ARACHNES The family
Page 97 and 98: 182 III. PROLES ARACHNES are above
Page 99 and 100: 186 Ill. PROLES ARACHNES opisthosom
Page 101 and 102: 190 Ill. PROLES ARACHNES Sub-order
Page 103 and 104: 194 III. PROLES ARACIINES 25. THE O
Page 105 and 106: 26 The Order Acari 26. THE ORDER AC
Page 107 and 108: 202 III. PROLES ARACHNES Tetrastigm
Page 109 and 110: 206 Ill. PROLES ARACHNES 26. THE'.
Page 111 and 112: 210 Ill. PROLES ARACHNES ( 1) Notos
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214 Ill. PROLES ARACHNES The sevent
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218 Ill. PROLES ARACHNES family, Ho
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222 Ill. PROLES ARACHNES posterior
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226 III. PROLES ARACHNES 28. THE OR
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230 Ill. PROLES ARACHNES From the f
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234 Ill. PROLES ARACHNES 29. THE OR
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238 Ill. PROLES ARACHNES The chelic
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242 IlL PROLES ARACHNES 29. THE ORD
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30 Economic Arachnology The Arachni
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250 IV. DE ARACHNOLOGIA Although th
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··~~- -..... 254 IV. DE ARACHNOLO
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31 Historical Arachnology The histo
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262 IV. DE ARACHNOLOGIA spiders qui
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266 IV. DE ARACHNOLOGIA little was
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32 Practical Arachnology The practi
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274 IV. DE ARACHNOLOGIA hard. In th
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278 IV. DE ARACHNOLOGIA EXCURSUS A
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33 Chemical Arachnology In the stud
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286 IV. DE ARACHNOLOGIA not very pl
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290 IV. DE ARACHNOLOGIA seventeenth
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294 IV. DE ARACHNOLOGIA A new aspec
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298 IV. DE ARACHNOLOGIA For more th
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36 The Spider's Web The webs that s
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306 V. HETEROGRAPHIA a number ofver
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310 V. HETEROGRAPHIA dramatically p
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314 ( i) ( ii) ( iii) (iv) (v) V. H
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318 V. HETEROGRAPHIA this may be ad
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322 V. HETEROGRAPHlA .1\Jenge in 18
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326 VI. EPILEGO:VIENA Vellard, J.,
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i 330 Vl. EPILEGO~iENA Lamoral, B.
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334 VI. EPILEGOMENA Ill. Bibliograp
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INDEX ANIMALIUM 339 Index Animalium
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Savory - Arachnida 1977

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