Boone, Crustacea, Cruise of "Alva," 1931 137 



The external maxillipeds have the distal border of the merus nearly 

 straight. 



The ehelipeds are unequal in both sexes and form a distinguishing 

 field character, by their length. The merus is long and projected from 

 half to two-thirds its length beyond the carapace, with a few crenula- 

 tions on its posterior surface. The carpus is rounded on its outer sur- 

 face and produced to a high, conspicuous triangulate tooth on its inner 

 lateral margin ; the propodus is short, smooth, as long as the propodus, 

 curved, with faint longitudinal grooves, black except for a cream line 

 margining the spoonshaped, concave tips. 



The ambulatories are of moderate size, with the carpus, propodus 

 and dactyl bearing numerous long hairs interspersed with stiff bristles, 

 on the upper surfaces, and in addition there are on the dactyl, several 

 longitudinal rows of sharp, amber-colored, chitin-like spinules. 



References : Cancer niger Forskal, Descrip. Anim. p. 89, 1775. 



Chlorodius niger Ruppell, 24 Krabben Roth. Meer., p. 20, pi. 4, fig. 7, 

 and pi. 6, fig. 14, 1830.— H. Milne Edwards, Hist. Nat. Crust, t. 

 I, p. 401, 1834.— Dana, U. S. Explor. Exped., vol. XIII, Crust, pt. 

 I, p. 216, pi. 12, figs. 5a-c, 1852. — Stimpson, Proc. Acad. Nat. Sci. 

 Phila., vol. 10, p. 33, 1858.— Heller, Sitzb. Akad. Wien, vol. 43, 

 pt. I, p. 335, 1861. — Reise Osterreich. Fregatte "Novara" Crust. 

 Zool., Bd. II, Abh. Ill, p. 18, 1868.— A. Milne Edwards, Nouv. 

 Archiv. Mus. Hist. Nat. Paris, t. IV, p. 71, 1868 ; iUd., t. IX, p. 214, 

 1873.— KossMAN, Reise Roth. Meer. Crust., p. 34, 1877.— Miers, 

 Ann. Mag. Nat. Hist., ser. 5, vol. V, p. 234, 1880.— Proc. Zool. Soc. 

 London, vol., p. 10, 11, 1884.— Zool. H. M. S. ''Alert," pp. 183, 215, 

 517, 531, 1884.— DE Man, Notes Leyden Mus., vol. II, p. 174, 1880. 

 — IUd., vol. Ill, p. 98, 1881. — Archiv. fur Naturges., vol. 53, I, p. 

 279, 1887.— Journ. Linn. Soc. London Zool., vol. XXII, p. 32, 1887- 

 88.— Zool. Jahrb. Syst., vol. VIII, p. 519, 1894-95.— Richters, in 

 Mobius Meeresf . Maurit., p. 147, 1880. — Haswell, Catal. Austral. 

 Stalk and Sessile-eyed Crust., p. 62, 1882. — Henderson, J. R., 

 Trans. Linn. Soc. Zool., ser. 2, vol. V, p. 361, 1893. — Ortmann, 

 Zool. Jahrb. Syst., vol. VII, p. 465, 1893-94.— In Semon's Zool. 

 Forschungsr., (Jena Denksch. Bd. VIII, p. 51, 18). — Alcock, 

 Journ. Asiatic Soc. Bengal, vol. 67, pt. 2, p. 160, 1898.— Nobili, 

 Ann. Mus. Genova, ser. 2, vol. 20, p. 258, 1899-1901. — Borradaile, 

 Proc. Zool. Soc, London, 1900, pt. p. 586. — Lanchester, Proc. 

 Zool. Soc. London, 1901, pt. 2, p. 539 j Calman, W. T., Trans. Linn. 



