CUMAGFA—CALM AN. 
151 
There is a median dorsal keel on the last thoracic and on all the abdominal 
somites, but there are no lateral keels. 
First legs with basis longer, by nearly one-fourth, than the distal segments 
together, propodus longer than carpus, dactylus less than two-thirds as long as 
propodus. 
Peduncle of uropods longer by one-third than last somite and slightly longer than 
the rami. Exopod with an apical spine and plumose setae on inner edge. Endopod 
sharply pointed, serrate on inner edge, with a series of pectinate setae followed by 
five or six spines. Peduncle with plumose setae on inner edge. 
Fig. 5 .—Cyclaspis coelebs, n. sp. Male. A. Side view, x 22. B. Anterior portion of body, from 
above. X 22. C. First leg. X 45. I). Last somite and uropod. X 45. 
The exoskeleton is strongly calcified and, when dried, of a dull white appearance, 
contrasting with the glossy surface of C. thomsoni. 
Remarks .—The oblique ridge on the carapace suggests a comparison of this species 
with C. thomsoni, from which, however, it is at once separated by the antero-lateral 
prominences as well as by the slightly different outline of the carapace and the shorter 
dactylus of the first legs. The specific name refers to the fact that the males on which 
the description is based were unaccompanied by females. 
