The Cumacea of tlie Puritan Expedition. 427 



rhe autennal notch is obsolete aud the lower margiu curves upwards 

 :o the pseudorostrum with hardly an indication of the antero-lateral 

 lug'le. The whole surfaee of the carapace is set with small spines, 

 [•ather widelv spaced, while on the dorsal surfaee ou each side is a longi- 

 ;udiual row of about eight strong spines extending fvom the posterior 

 margin on to the side of the pseudorostrum. There are about six 

 rery long set» on the dorsal surfaee. The anterior part of the 

 lower margin bears a series of curved spines. The first leg-bearing 

 3omite is exposed only on the dorsal surfaee. The follo wing 

 thoracic somites like those of the abdomen bear each a pair of 

 spines on the dorsal surfaee. The fifth abdominal somite has a 

 median dorsal spine about the middle of its length and the sixth, 

 which is distinctly broader than the preceding, has three spines on 

 the dorsal surfaee. The autennules (broken otf in the specimen 

 figured) are rather long and stout, but appear to resemble those of 

 C. mhicunda as figured by Sars. 



The mouth-parts resemble those of C. ruhicunda very closely 

 but the molar process of the mandible is a little longer and more 

 slender, the palp of the maxillulse carries two seta?, and the maxillse 

 have six set^e. The branchial apparatus is considerably reduced, 

 only three lobules being visible. The second maxillipeds (fig. 38) 

 dififer from those of ali species of the genus hitherto described in 

 having the ischìum distinct; the terminal segment carries three 

 stroug spines. Third maxillipeds (fig. 39) have strong teeth on the 

 margins of most of the segments, the merus is not expanded, hardly 

 broader than the succeeding segment and equal to the two succeed- 

 ing Segments in length. The piumose setse on the end of the 

 merus extend to the tip of the limb. 



The first legs (fig. 40) are moderately slender, the merus consi- 

 derably less than half the total length. The second legs (fig. 41) 

 have the merus less than Y3 of the total length, the carpus serrated 

 ou the outer edge and the dactylus equal in length to the two 

 preceding segments. The remaining legs (fig. 42) are rather stout. 

 In the third and fifth pairs the carpus bears two and in the fourth 

 three long set^e. 



The uropods (fig. 43) are slender and about equal in length 

 to the last four somites. The peduncle is more than twice the length 

 of the last somite, its margins not distinctly serrate. The exopod 

 is very slightly longer than the endopod and about half the length 

 of the peduncle. The endopod is armed with four spines which, 



Mittheilnngen a. d. Zool. Station zu Neapel. Bd. 17. 29 



