NO. 1309. XATU/iAL IlfsronV OF TIIF. ISOJ'ODA—JUCJIA J:/>Si>.\. 



(')75 



Fig. 27.— Rocixela Hawaii en- 

 sis, NEW SPECIE.S. X '2|. 



other by a distance equal only to half the width of one eye. Fir^t i)air 

 of antenna, with a tiaoellum of five joints, extend to the end of the 

 peduncle of the second pair of antenna\ Second pair of antenna', with a 

 tlaoellum of seventeen joints, reach the poste- 

 rior margin of the second thoracic segment. 

 First two segments of thorax subequal in 

 length; third and fourth subequal and a little 

 longer than the hrst two; tifth and sixth 

 longest, each one nearly ecjual to the first two 

 sesfments taken togeth(>r; seventh seo-ment 

 shorter than the two preceding. a})out e([ual 

 to the third or fourth. Epimeia of the last 

 four segments acutely pointed at their pos- 

 terior extremities; those of the second and 

 third segments more rounded posteriori}'. 



The first abdominal segment is entirel}^ con- 

 cealed by the seventh thoracic segment except 

 at the sides; the three following segments are 

 subequal, with acutel}' produced postero- 

 lateral angles; the fourth segment has the 

 sides not produced and mostly covered b}' 

 the postero-lateral angles of the preceding segment; terminal seg- 

 ment narrowly rounded. LTropoda oar-like, subequal in length 

 and equal in width. Both branches are faintl}^ crenulate on the 

 external margin. The basal joint of the uropoda extends only half 

 the length of the inner l)ranch. 



First three pairs of legs (fig. 28) prehensile^ 

 with long slender curved dactyli; the propodus 

 is armed with three spines; the carpus with one 

 spine, and the merus with three spines, except 

 on the first pair of legs. The four gressorial legs 

 are long and slender and armed with few spines. 

 Onl}^ one specimen was taken l»y the V. S. Fish 

 Commission steamer Albatross at Kauai Island, 

 the Hawaiian Islands, at a depth of 414 to OBt? 

 fathoms. 



Ti/pe.— Cat No. 28972, U.S.N.M. 

 This spc<'ies is perhaps nearer to L\ orltutalis 

 Schi(edte and Meineit" than to any other known 

 species of the genus. It differs from that form, however, in the nuich 

 larger eyes which are separated by a distance e(|ual only to halt the 

 width of one eye, wdiile in E. orientalls the eyes are sei)arated l>y 

 a distance equal to one-third the width of the head; in the narrower 

 and more elongate ])ody: in having the two branches of the uropoda 

 of equal length and width, while in B. orhntal'is the outer branch is 



« Naturhi.storisk Tids^^kril"t, (:>), XII, 1879-80. 



Fig. 2s. — Leg op second 

 pair of rocinela hawa- 

 IIENSIS. X 5}. 



