CALIFORNIA STALK-EYED CRUSTACEA. 95 



Genus Parapinnixa Holmes. 



Carapace much broader than long, the anterior margin nearly straight. 

 Frontal process deflexed. Orbits nearly round. Antennules transversely 

 or obliquely plicated, the f ossettes communicating with each other beneath 

 the front. Buccal area small, subtriangular. Maxillipeds with the ischium 

 rudimentary, the merus large, triangular; palp;^^^<^/p/ three-jointed, the 

 last joint joined to the tip of the preceding one. First pair of ambulatory 

 legs the largest, the others diminishing successively in length, the last 

 pair being quite small. Abdomen of female small, not nearly covering 

 the sternal area. 



Type. — P. nitida (Lock.) 



Parapinnixa affinis, sp. nov. 



Closely allied to P. nitida, but the carapace is less than twice as wide as 

 long, while in that species the width of the carapace is over twice its 

 length; the surface of the carapace is smooth and shining and the anterior 

 margin straight. Front triangular, depressed, having a short median 

 groove. Antennules oblique. Buccal area small, triangular, rounded in 

 front, the posterior portion partly covered by a projection of the sternum. 

 Chelipeds stout, smooth; hand thickened, smooth, rounded above and 

 below; dactyl hooked at the tip and armed with a small tooth near the 

 middle of the inner margin, the upper side smooth; pollex with two teeth 

 at the tip. First pair of ambulatory legs larger than the others; dactyls 

 short and stout. Next two pairs comparatively slender, having longer 

 dactyls; last pair small, reaching about to the tip of the merus of the 

 preceding pair; dactyls short and stout. Abdomen of the female widest 

 at the third segment, behind which its shape is triangular, the tip broadly 

 rounded. 



Described from a single female specimen collected 

 at Dead Man's Island, San Pedro, Calif., by Mr. F. W. 

 Bancroft, July, 1895. Collection of the University of 

 California. 



The maxillipeds in this species are similar to those of 

 nitida. They were accidentally lost after I had removed 

 them from the specimen; the palp appeared to have but 

 two joints, but the examination was not made with 

 sufficient care to make me feelsure of this point. 



