206 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



Fig. 202.— RociNELA latk auda. a, Maxili.iped 



X 27^. 6, Leg of .second pair, x 9^. 



diis armed with live spine.s in tho larger specimen, six in tlie smaller 

 specimen, the merus with four spines. The four following pairs of 



legs are ambulatory and are 

 thickly l)eset with spines." 



ROCINELA ANGUSTATA Rich- 

 ardson. 



Roc'meUi latininda Richardson ( not 

 Hansen), Proc. Am. Philos. 

 Soc, XXXVII, 1898, pp. 14- 

 15, figs. 5-6; Proc. V. S. Nat. 

 Mus. , XXI, 1899, p. 828 ( part) ; 

 Proc. V. S. Nat. Mus., XXVII, 

 1904, p. 33; BulL U. 8. Fish 

 ■ Coinm., XXIV, 1905, p. 214. 



Local'tties. — Off San Luis Obis- 

 po Ba}^, California; off' Esteros 

 Bay, California; Puget Sound, 

 Washington; Unimak Island. Alaska; Japan; Eastern Pas.sage (vicinity 

 of Stikine River Delta), southeastern Alaska; vicinity of Yes Bay, Behm 

 Canal. 



Depth.— iM-'ib'I fathoms. 



Head, with a median projection, long and ))road, 

 extending slightly downward and ha\'ing a blunt 

 extremity. Eyes large, with ten I'ows of ocelli. 

 The tirst antenna, with a ffagelluni composed of 

 six articles, reaches the posterior margin of the 

 head. The second antenna extends to the middle 

 of the second thoracic segment; its tiagellum con- 

 sists of tifteen articles. 



The thoracic segments are ecpial in length. The first is deeply 

 bisimiated, its antero-lateral angles extending along the side of the 

 head to about the middle of the eyes. The epimera of the second, 

 third, and fourth segments are rounded 

 posteriorly; those of the remaining seg- 

 ments have pointed extremities. 



The tirst segment of the abdomen is 

 almost entirely covered by the last tho 

 racic segment. The fffth segment, as 

 well as this one, is narrower than the fig. 204.— rocinela angustata. head 

 intervening segments, and not as broad ^"™ "^""";:;,\T """T. ^^%"Z, 



^5 *= ' _ MENTS OF THOKAX. X IJ. (FRO.M 



as the base of the terminal segment. japan.) 



The last segment is It nun. wide and ~ih 



nun. long.widely rounded posteriorly, and isfiinged with rough hairs, 



which almost conceal its crenulated margin; at the ba.se it is impressed 



¥ui. 203.— Rocinela an 

 guttata. Head, x 2! 



"The iiR'asureinents air of the larger sj)ecimen. 

 the snialli'r s])eciinen. 



Tlie (h'awings are made frum 



