A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 33
sulcus shallow
tentaculata
57(53). Peristomial cirri reach middle or anterior end of peristomium; peristomial cirri
digitiform; narrow tips of ventral cirri tapering; prostomium at least as deep
as V2 of peristomium 58
Peristomial cirri reach beyond prostomium; peristomial cirri tapering; narrow
tips of ventral cirri digitiform; prostomium less than V2 as deep as
peristomium
vittatopsis
58(57). A-II and III similar in length with A-I shorter; peristomial cirri without
articulations; ceratostyles digitiform; branchiae about as long as notopodial
cirri
kerguelensis
Length of antennae increasing from A-I to A-III; peristomial cirri articulated;
ceratostyles tapering; branchiae distinctly longer than notopodial cirri
australis
59(53). Ncuroaciculac distally pointed (sharp or blunt); anterior notopodial cirri
tapering
parva
Ncuroaciculac distally expanded, knurled and knobbed; anterior notopodial
cirri basally inflated
papeetensis
Ncuroaciculac distally hammer-headed; anterior notopodial cirri medially
inflated
pellucida
60(2). Neuroaciculae distally pointed (sharp or blunt); appendages of compound
falcigers distally bidentate; ceratophores ring-shaped in all antennae;
peristomial cirri digitiform
flaccida
Neuroaciculae distally bifid (bidentate); appendages of compound falcigers
distally tridentate; ceratophores long in A-I and ring-shaped in other three;
peristomial cirri tapering
elseyi
61(1). Compound spinigcrs present [Figure 57c] 62
Compound spinigers absent 64
62(61). Branchiae present to near posterior end; neuroaciculae dark honey-colored to
black; branchiae distinctly longer than notopodial cirri; neuroaciculae
emerging dorsal to parapodial midline 63
Branchiae terminating well before posterior end; neuroaciculae light yellow or
translucent; branchiae about as long as notopodial cirri; neuroaciculae
emerging at parapodial midline
tubicola
63(62). Ceratostyles articulated; branchiae palmate; neuroaciculae distally pointed
(sharp or blunt); three or more subacicular hooks in most setigers
impexa
Ceratostyles without articulations; branchiae pectinate; neuroaciculae distally
flattened with rounded tabs; subacicular hooks always single (except for
replacements)
tubifex
64(61). Pseudocompound falcigers present pelamidis
Pseudocompound falcigers absent 65
65(64). Branchiae present 66
Branchiae absent 145
66(65). Subacicular hooks tapering to simple falcate tips [Figure 49a] 67
Subacicular hooks bidentate 70
Subacicular hooks tridentate with teeth in tandem Figure 96p] 144
67(66). Branchiae present to near posterior end 68
Branchiae terminating well before posterior end 69
68(67). Branchiae pectinate; three or more subacicular hooks in most setigers; length of
all antennae similar (short); antennae similar in thickness .... sebastiani
Branchiae single filaments; subacicular hooks always single (except for
replacements); A-II and III similar in length with A-I shorter; A-I thicker
than other three antennae
marenzelleri
69(67). Ceratostyles articulated; peristomial cirri reach middle or anterior end of