Boone, Crustacea, Cruise of "Alva," 1931 191 



edges of each finger deeply channelled, concavely, with the respec- 

 tive channels filled with bristly setae ; the opposed fingers are sepa- 

 rated, except at the tip, by a wide, elliptical sulcus. The smaller 

 first cheliped only reaches to midway the palm of the larger cheli- 

 ped and is of similar structure but has the finger-tips less dentate. 



The second pair of legs is very slender, a trifle longer than 

 the first pair, subequal to each other, and have the basis short, 

 with a convex, laminate, setose process on the inner lateral mar- 

 gin ; the ischium is slender, 5 mm. long ; the merus, 2 mm. ; the 

 carpus, first joint, 3 mm. ; second joint, 1.8 mm. ; third joint, 0.8 

 mm.; the fourth, fifth, sixth, seventh and eighth joints each 1 

 mm. long; the ninth and tenth each 0.75 mm. long; the eleventh 

 joint 1.5 mm. long; the palm is 2 mm., the fingers being 1.5 mm. 

 of this, curved, meeting throughout their length, tips acuminate 

 and fringed with a cuff of bristles. 



The ambulatory legs are moderately strong, similar, decreas- 

 ing a little in length in the order 1, 2, 3 ; the carpal joint has a 

 strong, distally rounded protuberance on its upper distal mar- 

 gin ; the propodus is almost as long as the related merus, armed 

 on the distal half of the interior lateral margin with a longitudinal 

 series, occasionally double series, of sharp black spines ; the dactyl 

 is two-fifths as long as the propodus, curved, tip acuminate; 

 unequally biunguiculate, the inferolateral margin with a series 

 of three to five acute black spines. 



References: Palaemon marmoratus, Olivier, A. G., Encycl. 

 Meth., t. VIII, p. 519 ; Atlas, fig. 3. 



Alpheus marmoratus, Lamarck, J, B., Hist. Anim. sans Vert., t. V, 



p. 205. 

 Hippolyte marmoratus, Edwards, H. M., Hist. Nat. Crust., t. II, 



1837, p. 379, pi. 25, fig. 8. — Zehntner, L., Revue Suisse Zool., 



t. II, 1894, p. 206. 



Hippolyte marmorata, Randall, J., Proc. Acad. Nat. Sci. Phila., 

 vol. VIII, 1, 1839, p. 142 ; Archiv. f . Naturg., Bd. LIII, 1, 1887, 

 p. 533. 



Hippolyte gihherosus, Edwards, H. M., Hist. Nat. Crust., t. II, 

 1837, p. 378; Atlas, Cuvier Regne Anim. Crust., pi. 53, fig. 

 4, 1849. — Haswell, W. A., Cat. Austral. Stalk and Sessile- 

 Eyed Crust., 1882, p. 185. — Whitlegge, Thos., Mem. Aus- 

 tral. Mus. Sydney, vol. Ill, 1897, p. 146. 



