CALIFORNIA STALK-EYED CRUSTACEA. 59 



Cycloxanthops rugosa, sp. nov. 



Carapace very uneven, granulated, and thickly covered with small, cir- 

 cular pits. Postorbital tooth small; antero-lateral teeth irregular. Ante- 

 rior portion of the subhepatic region prominently granulated and pitted 

 and not sharply separated from the strongly sloping anterior portion of 

 the hepatic area. Front shorter and more depressed than in novem- 

 dentatus. External maxillipeds much as in the preceding species; merus 

 pitted and granulated. Carpus of the chelipeds strongly reticulated above; 

 a prominent tooth at the antero-internal angle, below which is a smaller 

 tooth. Hands narrow, strongly reticulated above and on the upper por- 

 tion of the outer surface, the inner margin of the upper side furnished 

 with several irregular tubercles. Ambulatory legs much as in novem- 

 dentatus but less hairy. 



San Diego, California. Collected by A. U. Crawford. 



Described from a specimen in the museum of the 

 University of California. Easily distinguished by the 

 conspicuous pits and prominent granulations of the 

 carapace. 



Genus Lophoxanthus A. Milne-Edwards. 



Carapace broader than long, flattened, the anterior portion of the antero- 

 lateral margins straight, nearly devoid of teeth, and meeting the dentate 

 posterior portion at an angle. Front short and divided by a median fis- 

 sure into two broad, truncated lobes. Orbits nearly circular and marked 

 with fissures which are closed or even obsolete. Basal antennal joint 

 short and in contact with the infero-lateral process of the front, but not 

 entering the inner orbital hiatus. Maxillipeds nearly quadrate, the merus 

 distally truncated, the antero-external angle not produced. Ambulatory 

 legs compressed and carinated or crested above. Abdomen in the male 

 five- jointed. 



Type. L. lamellipes (STIMPSON.) 



This genus is doubtfully distinct from Lophozozymus, being distin- 

 guished chiefly by its more transverse carapace and the absence of con- 

 spicuous teeth on the anterior portion of the antero-lateral margins. The 

 three species of this genus here described are closely allied. In all these 

 the areolation of the carapace is distinct, the postorbital tooth minute, 

 the anterior half of the autero-lateral margin straight and fiirnished with 

 a single low, obscure tooth, the posterior half nearly longitudinal and 

 furnished with three, prominent, subequal teeth, the epistome with a 

 ridge extending upon it from the sides, the inferior inner orbital tooth 



