ISOPODS OF NORTH AMF:RrCA. 319 



the antorior portion with tlircc tuh(M-ck\s, tlic middle one rather hhmt 

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

 eral i-idges in front of the posterior notch; notch deej), 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 su})acute; outer branch very long, narrow, and 

 incurved, extending consideral)ly behind the tip of the caudal shield 

 and directed obliquely upward. First antenna' a little shorter than 

 the second, the first basal joint enlai'ged, oblong, and emarginat(> at 

 the distal end at the insertion of the small, sulxpiadi'ate second joint; 

 Hagelluiu longer than the peduncle and composed of nine to eleven 

 joints. Second antenna^ scarcely reaching the middle of the thorax, 

 the ])eduncle slender, the last two joints much longer than the pre- 

 ceding ones; flagellum a little longer than the })eduncle. the joints 

 furnislied with short sette. Thoracic legs increasing slightlv in leno-th 

 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. 



"T\w ftMiiales are smaller than the males; the head, antenna', mouth 

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

 those of the male, but the a])domen 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 bej^ond the tip of the caudal 

 shield." — TToi>MKs." 



CILIC^A CARINATA Richardson. 



(V/ic<r« cannata Richardson, American Naturalist, XXXIV, 1900, p. 224; Proc. 

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



Locality. — Coast of Georgia. 



D(^jth.—UO fathoms. 



Head with a median projection o?i the anterior maigin. produced 

 forward in the form of a large tubercle. Eyes 

 colorless. First pair of antenna^ reach the poste- 

 rior margin of the head; flagellum eight-jointed. 

 Second pair of antennse reach the posterior margin 

 of the flrst thoracic segment. 



The segments of the thorax are roughl}^ granu- 

 lated. A transverse median ridge or elevation ' NAXAr head.^"' 

 appears on each of the segments, giving the dorsum, 

 from a lateral view, a ver}^ rugged appearance. The epimera are 

 rough and are drawn out laterally in very acute angles. 



«Proc, Cal. Acad. Sciences (3), III, 1904, pp. 300-301. 



