838 PliOCEEIJINGS OF THE NATIONAL MUSEUM. vouxxi. 



segmeut. The terminal segment is widely rounded posteriorly. The 

 inner branch ot the uropoda is of nearly equal width throughout its 

 length and is rounded at its extremity; the outer branch is slender and 

 sharply pointed. Both brandies are of nearly equal length and neither 

 extend beyond the tip of the abdomen. 



The first pair of legs have the i)ropodus dilated and the dactylus 

 reflexible. The propodus is large and oval in shape. In the legs of 

 the second pair the propodus is irregular in shape, sometimes dilated 

 with reflexible dactylus, and sometimes simple. The legs of the other 

 five pairs are similar in structure, ambulatory, and show a gradual 

 increase in length. 



A number of individuals were found at Monterey Bay, California, and 

 sent to the U. S. National Museum by Mr. Heath, who gives the follow- 

 ing notes of their habits: 



They were taken by the Chinese fishermen from a sandy sea bottom about 30 feet 

 below the surface (according to the Chinese statement). These are rapid swimmers 

 and the moment they are disturbed they roll into a ball and project the exopodite 

 of tlie last free segment. This is undoubtedly for protection. I have not had time 

 to accurately cxaniiue the position nor character of this appendage, but its sharp 

 swordlike nature is readily recognized. 



Type.— No. 22572, U.S.N.M. 



This species differs from T. alascensis in having longer antennre and 

 antennulai; in having a rounded terminal segment, which in that species 

 is very pointed ; in having the (mter branch of the uropods as short as 

 the inner, which in that species is much longer; in having only a gradual 

 increase in tlie length of the legs, which in that species show Buch 

 marked disproportions in the propodus of the sixth and seventh pairs; 

 and in the position of the eyes, which in this species are situated in the 

 median transverse line of the head, while in T. alascensis they are placed 

 in the posterior half of the head. 



IS. CILIC^^A ^each. 



ANALYTICAL KKY TO THK SPECIES OK CIIIC^A. 



a. Surface of body smooth. 



b. Terminal segment with three sinuses, one above another, the two upper open- 

 ings heart-whapod. Terminal segment as broad as long. Outer branch of the 

 uropoda armed with four spines, broad and flat at ui)per end, and tapering to 

 the extremity, which does not reach beyond the tip of the abdomen. 



31. Cilicwa cordata, new species. 

 h' . Terminal segment with a large sinus, in which are placed six sharp teeth. 

 Terminal segment nearly twice as broad as long. Out<^r branch of the uropoda 

 smooth, slender, cylindrical, and reaching much beyond the tip of the abdo- 

 men 32. Cilicoa caiidata tjilliana, new subspecies. 



a'. Surface of body densely granulated. Terminal segment with a quadrangular 

 excavation, in the center of which is a long tooth. 



33. Cilicwa (jranulosa, now species. 



The position of the three following species is somewhat doubtful, 

 since they lack the spine on the penultimate abdominal segment, which 



i 



