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Hyas araneus (see above) and as in the last zoea-stage of the 
American species Cancer irroratus (S. I. Smith, Metamorph. of 
lobster and other crust.; U. S. Commission of Fish and lisheries 
1871—72 (1873), p. 530, PI. 8, fig. 37). Smith does not give 
of a pair of dorsal spines on the 5th abdorainal segment in his 
fig. seems to be the sole discrepanc}’ not due to the difference 
in age. — 
Description of the larva. 
The length between the tips of the rostrum and of the dorsal 
spine 2 mm. The rostrum is about twice as long as the carapace 
