NO. 1222. ISOPODS OF THE A TL ANTIC COAST— RICHA RDSON. 515 



extend to the end of the peduncle of the .second pair; flageUuni nine 

 jointed. Second pair of antenna^ extend to the po.s- 

 tei'ior margin of the third thoracic segment; flageUum, 

 twenty-three jointed. 



First thoracic segment but little longer than those 

 following, which are subequal in length. 



First abdominal segment entirely covered b}- seventh 

 thoracic segment. Terminal segment triangulate with 

 rounded extremity, its posterior margin denticulate 

 and bearing eight spines, the spines alternating with 

 the teeth. The uropoda reach the end of the terminal 

 segment; the inner branch is obliquely truncate pos- 

 teriorly, and armed with spines; the outer branch is ^^'^' '^^^^^^^^"^ 

 shorter and more slender than the inner branch, is 

 pointed at its extremity, and armed posteriorly and on its external 

 margin with spines. 



Color white, with scattered black spots. 



Several specimens were taken by Mr. E. L. Morris at Sugarloaf Key, 

 Florida. 



Type.—i^2X. No. 2390!>, U.S.N.M. 



17. CONILERA Leach. 



37. CONILERA CYLINDRACEA (Montagu). 



Oniscus cijUndraceus Montagu, Trans. Linn. Soc. Lond., VII, 1803, p. 71, pi. vi, 



fig. 8. 

 Cordlera montagui Leach, Diction, d. Scienc. Natur., XII, p. 348. — Desmarest, 



Consid. Crust., p. 304.— Milne-Edwards, Hist. Nat. d. Crust., Ill, p. 242. 

 Conilera ajUndracea Bate and Westwood, Brit. Sess.-Eyed Crust., II, p. 304. — 



Hansen, Vidensk. Selsk. Skr. (6), V, 1890, pp. 358-361, pi. iv, figs. 5-5c; pi. v, 



figs. 1-ld, 1890. 



HaUtat. — Oft" South Carolina; between the Delta of the Mississippi 

 and Cedar Keys, Florida; also Gulf of Naples; coast of England; coast 

 of France. 



Depth.— Ill to 159 fathoms. 



18. EURYDICE Leach. 



analytical key to the species of EURYDICE. 



It. Terminal segment of body with the posterior margin widely emarginate in the 

 middle, the post-lateral angles obliquely truncate, and each ornamented with 

 two robust spines, the inner one much longer than the outer one. Base of 

 .segment with a deep transverse impression in the median line, and a deep late- 

 ral impression on either side 38. Eurijdice spinigera Hansen. 



"'. Terminal segment rounded posteriorly with post-lateral triangular teeth, between 

 which, a space intervening, the posterior margin is denticulate, a spine alter- 

 nating with each tooth. Base of segment without any transverse depressions, 

 evenly convex 39. Eurydice convexa Richardson. 



