TSOPODS OF NORTH AMERICA. 



221 



The !<egnionts ot" the abdonion are all distinct. The si.xth or terminal 

 segment is a little broader than long, 6 mm.: 5 mm., almost quadrate, 

 with the post-lateral angles rounded and a small triangular point in 

 the middle ot the posterior margin. The uropoda are longer than the 

 terminal abdominal segment. Both branches are produced to long, 

 nai'row. acute extrcMuities. the outer branch being slightly nari'ower at 



Fi(i. '223.— XEKofir.A .uTMiNATA. a, Maxillipfj). /.'2~'i. 6, First MAXILLA. X 271. c, Second MAX- 

 IM. A. < 27;. (/, Palp ok mandible, x 27,'. e, Seventh leg. :■: 9|. 



the base and somewhat longer than the inner branch. The inner 

 branch is 3 mm. long; the outer branch -i mm. in length. 



The legs are all prehensile, slightl}' increasing in length, with long, 

 curved dactyli. 



There are two longitudinal bands or stripes of a light-brown or yel- 

 low color extending the entire length of the body, one on either side 

 of the median line. The other parts of the body are dark greenish 

 brown. 



NEROCILA CALIFORNICA Schioedte and Meinert. 



Nerocila californica Sciiicedte and Meinert, Naturhistorisk Tids^krift (3), XIII, 

 1881-83, pp. 72-76, pi. v, fig,s. 12-13; pi. vi, figs. 1-2.— Richardson, Proc-. 

 U. S. Nat. Mils., XXI, 1899, p. 830; Ann. Mag. Nat. Hist. (7), IV, 1899, p. 

 172; American Naturalist, XXXIV, 1900, p. 220. 



Localities. — San Diego, California; Taboga Island, Panama Bay; off 

 Point Sur, California; National City, California. 



Parasites of Pro?nicrops (juttatux; cat-lish on tin; Gyropleurodus 

 franclxci on dorsal fin; on dorsal and caudal fin of I\iralai>ixi,r d nth rata, 

 Scorjreena guttata, Triakis semifasciata,, Myliobatis sp. 



Body oblong-oyate, nearly two and a half times longer than wide, 

 S nun. : 19 nun. 



Head, widei- than long, 2^ mm. : 3^ mm., with the anterior margin 

 widely rounded, the posterior margin produced in three lol)es, the 

 middle one of which is much the lai'gei'. 'Fhe e^'cs are indistinct and 

 haye almost entirel}' disappeared. They have degenerated, pro>)ably 

 owing to the parasitic mode of life, and are certainly functionless. The 

 first pair of antenna? are composed of eight articles and extend to the 

 end of the seventh article of the second paii" of anteniue. The s ■( oiil 



