ISOPODS OF NORTH AMERICA. 319 



the anterior portion with three tubercles, the middle one rather blunt 

 and a little in advance of the others; a pointed tubercle with two lat- 

 eral ridges in front of the posterior notch; notch deep, with a small 

 spine at the end, behind which is a pair of larger spines. Inner 

 branch of the uropods flattened and not nearly reaching the tip of the 

 caudal shield, the tip subacute; outer branch very long, narrow, and 

 incurved, extending considerably behind the tip of the caudal shield 

 and directed obliquely upward. First antennae a little shorter than 

 the second, the first basal joint enlarged, oblong, and emarginate at 

 the distal end at the insertion of the small, subquadrate second joint; 

 flagellum longer than the peduncle and composed of nine to eleven 

 joints. Second antennae scarcely reaching the middle of the thorax, 

 the peduncle slender, the last two joints much longer than the pre- 

 ceding ones; flagellum a little longer than the peduncle, the joints 

 furnished with short setae. Thoracic legs increasing slightly in length 

 posteriorly and furnished with short hairs; propodi armed below with 

 spines; dactyls curved and ending in a spine with a strong spine 

 behind the tip. 



"The females are smaller than the males; the head, antennae, mouth 

 parts, thoracic legs, and anterior segments are not distinguishable from 

 those of the male, but the abdomen is markedly different. The caudal 

 shield is relatively smaller and less sculptured; the notch at the ex- 

 tremity is simple and shallow; there are three oblong tubercles on the 

 anterior portion; the three tubercles on the next segment in front are 

 smaller than in the male. The branches of the uropods are flattened 

 and of subequal size; neither extends beyond the tip of the caudal 

 shield." HOLMES/' 



CILIC^EA CARINATA Richardson. 



Cilicsea carinata RICHARDSON, American Naturalist, XXXIV, 1900, p. 224; Proc. 

 U. S. Nat. Mus., XXIII, 1901, pp. 535-536. 



Locality. Coast of Georgia. 



Depth. 440 fathoms. 



Head with a median projection on the anterior margin, produced 

 forward in the form of a large tubercle. Eyes 

 colorless. First pair of antennae reach the poste- 

 rior margin of the head; flagellum eight- jointed. 

 Second pair of antennae reach the posterior margin 

 of the first thoracic segment. 



The segments of the thorax are roughly granu- 



. FIG. 360. CILICSEA CARI- 



lated. A transverse median ridge or elevation NA TA. HEAD. 



appears on each of the segments, giving the dorsum, 

 from a lateral view, a very rugged appearance. The epimera are 

 rough and are drawn out laterally in very acute angles. 



flProc, Ca.1. Acad. Sciences (3), III, 1904, pp. 300-301. 



