ISOPODS OF NORTH AMERICA. 309 



c. Sinus with teeth. 



d. SiiuiH with four or ^^ix teetli. 

 , e. Sinus with six teeth. Medium tubercle at base of terminal segment 



double Ciiiava (jiUiana Kichardson 



e'. Sinus with four teeth. Medium tubercle at l)ase of terminal segment 



single Ciliciea caiulata (Say ) 



(V. Sinus with three teeth Ciliaea sculpta (Hohnes) 



c^. Sinus without teeth ('iliava carlnata Richardson 



CILICiEA LINGUICAUDA Richardson. 



Ciliaea liiignicaudu Rrh.xkdson, I'roc. l'. S. Nat. Mus., XXIII, 1901, pp. 536-537. 



Li>cal'it\j. — Cape Catoche, Yucatan. 



Depth.— "y.^-^^ fathoni.s. 



Head subtriang-ular in shape; frontal marg-in with a small median 

 point; e3'es post-laterally situated. The tirst pair of antennje reach 

 the posterior margin of the tirst thoracic segment; the second pair 

 touch the fourth segment. 



The first segment of the thorax is a little longer than any of the 

 others, which are similar in size. The epimera are distinct from the 

 segments, and are produced into acute points, with the 

 exception of the last, which has the epimera quite rounded. 



The abdomen is composed of two segments, the first of k 

 which gives indication of three coalesced segments, and 

 has a small tooth on each side on its post-lateral margin. ^^^ 334_cili- 

 The last segment is swollen anteriorly, and bears three c.ea lixgui- 

 low tubercles on this portion. The extremity of the domen 

 abdomen is marked by a sinus, almost completely filled 

 by a single large tooth, which is posteriorly triangular and extends 

 beyond the lateral teeth formed by the sinus. This central tooth 

 bears a small, pointed tubercle near its base. The uropoda are slightly 

 incurved, and are somewhat longer than the abdomen. 



The color is a dull yellow. 



The lower part of each thoracic segment is densely granulated, as 

 well as the whole surface of the abdomen. The edges of the segments 

 and the uropoda are fringed with hairs. 



Type.—Qixi. No. 23908, U.S.N.M. 



CILICiEA GRANULOSA Richardson. 



Ciliciva fp-aiiii/om RicuAunsoN, Proc. U. S. Nat. Mus., XXI, 1899, p. 841; Ann. 

 Mag. Nat. Hi.^t., (7^ IV, 1899, pp. 186-187. 



Locality. — Cerros Island, Lower California. 



Depth.— ^0 fathoms. 



Surface of body densely granulated; granules large and close 

 together. 



Head with anterior margin thickened, and pi-oduced in a small 

 median point, on either side of which the margin is lobed. Kyes 



