CUM ACT. A. lfi7 



the cxo.skeleton, and is here and there raised into tubercles, giving the whole surface 

 a rough and uneven aspect (fig. 37). 



The first leg-bearing somite is not exposed. The second is much lower than the 

 hind margin of the carapace. The remaining thoracic somites diminish gradually in 

 width : a pair of tubercles is present on the dorsal surface of each of the two last. 



The abdomen is stout, but on account of an injury to the posterior somites the 

 relative length of this region cannot be stated. All the somites, including the two 

 last, have a prominent median dorsal keel. Seen from above, each of the somites is 

 markedly constricted anteriorly, and also a little before its hinder margin. The 

 lateral articular processes do not overlap. 



The first legs are relatively short and stout, the basis not much less than half the 

 total length of the limb. 



The second legs are much shorter than the next succeeding pair. They are 

 composed of six segments, as in the above-described species, but there is no spine 

 developed on the merus. 



The uropods (fig. 38) are short and stout, about two-thirds longer than the last 

 somite. The peduncle is not much longer than broad, and is about two-fifths the 

 length of the sub-equal rami. Its inner edge bears a few spinules. Both rami end 

 in spiniform terminations marked off by indistinct suture lines, and bluntly rounded 

 and bent outwards at the tip. A single seta accompanies the terminal spine on the 

 exopod, which is otherwise unarmed. The endopod has a row of minute spinules 

 on its inner edge. 



Locality. From the Cheval Paar, in the Gulf of Manaar, depth 7 fathoms. 



The identity of the form here described with Kossmann's Cyclaspis sarsii from 

 the Red Sea is at once suggested by its general shape, and especially by the thick 

 clumsy form of the lateral cornua. Kossmann's figure shows the cornua as relatively 

 smaller than in the present specimen, and the lateral margins behind them nearly 

 straight. The paired ridges on the dorsal surface of the carapace are close together, 

 and there are two oblique ridges on the dorsal surface of the peduncle of the 

 uropods. It seems likely, however, that some of these differences may be due to the 

 difference in age and in sex, Kossmann's specimen being a male, 9 millims. in length, 

 more than twice the length of the present specimen, which is probably a young 

 female. Kossmann's description of the sculpturing of the exoskeleton agrees 

 exactly with that observed in this specimen. 



Cyclaspis, G. 0. Saks. 

 G. 0. Sars, 'Forh. Vidensk. Selsk. Christiania,' 1864 (1865), p. 206. 



The genus Cyclaspis, even after the removal of the species above transferred to 

 Eocuma, still includes a somewhat varied assemblage of forms, and becomes increasingly 

 difficult to define from the neighbouring genera of Bodotriidse. Without attempting, 



