FOUR NEW SPECIES OF ISOPODS FROM THE COAST OF 



CALIP^ORNIA. 



By S. J. Holmes and M. E. Gay, 



Of the Universitij of Wisconsht, Madison. 



The specimens of the new species here described were collected on 

 the coast of California by Dr. S. J. Holmes and sent to the U. S. 

 National Museum. 



ANCINUS GRANULATUS, new species. 



Body very broad and much depressed, contractile, evenly and 

 densely granulated. Thorax with parallel sides. Head twice as 

 broad as long; front produced into a recta.ngular lobe between the 

 bases of the antennules ; a small lobe on the 

 anterior margin on either side of the median 

 one. Eyes small and round. 



Antennae nearly equal in length; the 

 jflagellum of the first somewhat longer than 

 the peduncle and composed of about 10 

 joints. Second antennae with the flagellum 

 about 10-jointed and longer than the pe- 

 duncle; both furnished with 

 setse having a brush of radiating 

 hairs at the tip. 



Mandibles with the pa,lp situ- 

 ated behind the middle, the last 

 two joints furnished on the dis- 

 tal part of the outer margin 

 with setose spines, those of the 

 last joint increasing in length toward the tip. Palp of the maxilli- 

 peds with the first joint very short, the second and third joints as 

 wide as long and produced into a rounded setose lobe on the inner 

 margin ; fourth joint produced at the distal end of the inner margin 

 into a rounded setose lobe; last joint oblong, distally rounded and 

 setose, and about three- fourths the length of the preceding one. 



g", 



Fig. 1. — Ancinus granulatus ; j/»,, first 



GNATHOPOD. 



Proceedings U. S. National Museum, Vol. XXXVI— No. 1670. 



375 



