Boone, Crustacea, Cruise of "Alva," 1931 35 



tapered witli a sharp tip. When retracted the legs fold compactly 

 beneath the winglike expansion of the carapace. 



The orbit is small, the stalks slender, the cornea hemispherical, 

 terminal-dorsal in position; the eyestalk extending an eighth of an 

 inch or more above the carapace. 



The antennae have the basal article situated in the orbital hiatus, 

 with a peculiar enlarged process, directed obliquely inward, its mar- 

 gin beaded and completing the circle of the orbit ; the second and third 

 peduncular joints are flattish, nearly as wide as long; the flagellum is 

 rudimentary. 



The external maxillipeds have the ischium smooth, its inner mar- 

 gin with a series of broad, rounded, or triangular teeth, that interfit 

 with those of the opposing article; the merus has its outer margin 

 oblique and its outer surface and margins fringed with heavy, brush- 

 like setae; the exopodite is slender and has similar long setae on its 

 outer distal margins. 



References : Cancer hepaticus Linne, Mus. Lud. Ulr. No. 448, 1764 ; 

 Syst. Nat. ed. XII, vol. I, pt. II, p. 1048, 1766. 



Calappa hepatica DeHaan, Faun. Japon. Crust, p. 70, 1837. — Miers, 

 Cat. Stalk and Sessile-eyed Crust. New Zealand, p. 55, 1876. — 

 Phil. Trans. Royal Soc. London, vol. 168, p. 491, 1879.— Zool. H. 

 M. S. "Alert," pp. 185, 257, 518, 550, 1884.— Rept. Voy. H. M. S. 

 "Challenger" Zool. vol. XVII, p. 285, 1886.— Haswell, Catal. 

 Austral. Stalk and Sessile-eyed Crust., p. 136, 1882. — Filhol, 

 Crust. Nouvelle Zelande, p. 406, 1885.— Cano, Boll. Soc. Nat. 

 Napoli, vol. Ill, p. 249, 1889. — Ortmann, Zool. Jahrb. Syst., vol. 

 VI, p. 568, 1892. — Henderson, J. R., Trans. Linn. Soc. London, 

 ser. 2, vol. V, p. 395, 1893. — Alcock, Journ. Asiatic Soc. Bengal, 

 vol. 65, pt. 2, p. 142, 1896. — Nobili, G., Ann. Mus. Geneva, ser. 2, 

 vol. 20, p. 249, 1899-1901.— Calman, Trans. Linn. Soc. London, 

 Zool. ser. 2, vol. 8, p. 25, 1900-1903.— Borradaile, Proc. Zool. Soc. 

 London, 1900, pt. 2, p. 568 ; Fauna and Geog. Maldive and Laccad- 

 vie Arch., vol. I, pt. VI, p. 436, 1902. — Schenkel, Verb. Ges. Basel, 

 Bd. 13, p. 574, 1902.— Lenz, Abh. Senckenb. Naturf . Ges. Bd. 27, p. 

 346, 1905.— NoBiLi, G., Ann. Sci. Nat. ser. 9, Zool. t. IV, p. 148, 1906 ; 

 Boll. Mus. Torino, 1. 18, art. 447, p. 10, 1905.— Mem. Torino Acad. 

 Sci., ser. 2, vol. 57, p. 378, 1907.— Rathbun, M. J., Mem. Mus. 

 Comp. Zool. vol. 35, p. 167, 1907. — Laurie, R. D., Journ. Linn. 

 Soc. Zool. London, vol. 31, p. 427, 1907-1915.— Calman, in 



