6 - Sphaeromatidae::“Cute As Buttons”

Figure 64. Politolana polita,
anteroventral cephalon.
Politolana polita (Stimpson, 1853)
Figures 63C-F, 64
Politolana polita 143
DIAGNOSIS 2 7 . 0 m m , 9 2 9 . 0 m m . A n t e n n u l e b a r e l y r e a c h i n g d i s t a l e n d
o f a n t e n n a l p e d u n c l e . F r o n t a l l a m i n a b a s a l l y s l e n d e r , a n t e r i o r l y e x p a n d e d ,
j u s t v i s i b l e i n d o r s a l v i e w . C o x a e l a c k i n g i m p r e s s e d o b l i q u e l i n e . U r o p o d a l
e n d o p o d d i s t a l t o e m a r g i n a t i o n n a r r o w e d , m a r g i n c o n v e x . P l e o t e l s o n p o s ­
t e r i o r l y b r o a d l y r o u n d e d .
RECORDS
Mexico.
Bay of Fundy, Canada, to Florida Keys, 2-600 m; Gulf of
Subfamily Eurydicinae Stebbing, 1905
D I A G N O S I S C l y p e u s p r o j e c t i n g . P l e o n i t e 5 w i t h f r e e l a t e r a l m a r g i n s ( e x c e p t
i n X y l o l a n a ) . P e n e s p r o m i n e n t . P l e o p o d 2 o f 6 w i t h c o p u l a t o r y s t y l e t a r t i c ­
u l a t i n g s u b b a s a l l y , m e d i a l l y , o r s u b a p i c a l l y .
Key to genera of Eurydicinae
Uropodal sympod not produced along mesial margin of endopod
Eurydice
Uropodal sympod produced along mesial margin of endopod
Rostrum prominent, fused with frontal lamina, separating antennal
bases
Rostrum not prominent
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