Translation 2816

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(d) Spherical, obovoid cysts, mounted on top of reletjzvelly long stalks Genus: Stylodinium (npt treated) II. Cells (cysts) are spherical or ellipsoidal, not sessile.. forms (zoospore stage) are not known. Reproduction is eutPspProus in character. • - (a) Contents of cell are transformed into a body resembling qymnodinium, which undergoes cleavage and fors twP qymnodinium cells. These, however, remain non-meile and are transformed into cells resembling autozpores. Family: Hypnodiniaoee.e One genus: Hypnodinium. (b) Transformation of cell contents into cells resembling gymnodinium no longer takes place. There occurs ollly simple cell cleavage, whereupon the two daughter PellS leave the mother cell as autospores. Family: Phytodiniaceae One genus: Phytodinium .Key for Cystodinium • (2-89) A. Cysts free-floating. I. Cysts are elongated, curved in fusiform or lunate fashion, narrowed on both ends and drawn out into more or less lPng, colorless aciculae (membrane spines). • (a) Membrane spines are on both ends of the cyst.
58 1. Terminal spines are relatively thin, usually curved and more or less long* d,) Terminal spines are curved in the same direction, occasionally almost parallel, usually more or less divaricating (zoosporous). G. cornifax 2. ^3} One spine runs along the longitudinal axis of the cyst, the other is deflècted from the longitudinal axis at an angle (zoosporous). G. Steinii 1^., b') Cysts are ellipsoidal, not narrowed very much at the ends.. One of the-two membrane spines is deflected in the opposite direction to the other. Cyst contents and zoospores are-unknown,, Ç, bisetosum 3- 2. Terminal spines are thicker, more or less long, straight or curved. oC)Cysts fusiform. Terminal spines are thick, almost truncated, relatively long, and quite wide at the base. Either they run in the direction of the longitudinal axis, being straight or slightly curved, or one spine is only moderately curved, while the other is curved like a hockeystick. Zoospores have the shape of a mn. fuse. ....... C.. novaculosum 5 Cysts lunate. Terminal spines are relatively short, stout , acuminate, curved towards the "ventral
Page 1 and 2:
w Es FISHERIES RESEARCH BOARD OF CA
Page 3 and 4:
s C+'EPARTMEKT 0^•=i (1E:SEGRE-TA
Page 5 and 6:
1 IL * 3 Family IV. Katablepharidac
Page 7 and 8: 5% 5. Cells are cylindrical to cyli
Page 9 and 10: 7 (Possiblyalso the forms under B,
Page 11 and 12: 1 ,` • •• a.- 9 are usually o
Page 13 and 14: 11 rounded, or it may be rounded an
Page 15 and 16: 13 nose-like nrotrusion. Cells are
Page 17 and 18: 2. Posterior end truncated, usualIy
Page 19 and 20: 17 • structure. There are one.or
Page 21 and 22: 19 A. Cells laterally compressed v
Page 23 and 24: 21 2b. Cells obovoid to pyriform, b
Page 25 and 26: 24 consists of dissimilar polygonal
Page 27 and 28: 26 B. Cells are larger: length, 18-
Page 29 and 30: 28 larger than the hypovalve. Stigm
Page 31 and 32: 30 The epivalve and the hypovalve a
Page 33 and 34: 32 flattened dorsiventrally. Nieasu
Page 35 and 36: 34. 1"Longitudina1 groove carinate.
Page 37 and 38: 36 broadly oval with slight indenta
Page 39 and 40: 38 2. Cells have the shape of a tru
Page 41 and 42: B. Posterior end not rounded (or ro
Page 43 and 44: 42 B. Coverings (shells) represent
Page 45 and 46: 44 I. Epivalve with 16 plates (8 pr
Page 47 and 48: 46 2. Valves not both the same size
Page 49 and 50: ,a • 48' 2. Cells are oval to sph
Page 51 and 52: 50 1. Cells are ovoid to almost sph
Page 53 and 54: 52 1. Cell outline is pentangular,
Page 55 and 56: 54 Key to the identification of the
Page 57: 56 2. Divarication of postequatoria
Page 61: 60 (b) Cysts are ellipsoidal. Autos
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Translation 2816

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