1SOPODA . 



NORM ALIA. 



DYNAMENE VIRIDIS. 421 



SPH^ROMID^E. 



DYNAMENE VIRIDIS. 



Specific character. Broadly ovate ; sixth segment simple ; terminal seg- 

 ment of the pteon centrally very convex, with an outer flattened margin, and 

 a terminal excavation, which is widest at its base. Colour green. Outer 

 plate of the uropoda rather smaller than the interior. 



Length, about one-fifth of an inch. 



Dynamcne viridis. LEACH, Dictionn. Sci. Nat. xii. p. 344. DESMAREST, 



Cons. Crust, p. 298. 

 Cymodocea viridis. MILNE EDWARDS, Crust, iii. p. 216. WHITE, B. M. 



Cat. Brit. Crust, p. 77. Pop. Hist. Brit. Crust. 



p. 267. 



THIS species is distinguished from the preceding by 

 its broadly ovate form, and from the following by the 

 sixth segment of the body being destitute of an in- 

 cumbent spine ; the dorsal surface is even, and destitute 

 of ciliae. The upper antennae are separated from each 

 other at the base by a small oblong lobe ; the second 



