Boone, Crustacea, Cruises of ''Eagle" and "Ara," 1921-28 119 



fourths of the length of the seaphocerite ; the flagellum is about half 



as long as the body of the animal. 

 The first three pairs of legs are chelate; the fourth and fifth pairs 



are monodactyl ; the series increase in length in the order named. 



Synonymy. — Sicyonia edwardsi E. J. Miers, Ann. Nat. Hist. (5), vol. 

 8, p. 367, 1881.— Faxon, Mem. Mus. Comp. ZooL, vol. XVIII, 

 p. 179, 1895 ; Bull. Mus. Comp. Zool., vol. XXX, p. 162, 1896.— 

 Eathbun, Rapport Betreffende een voorloopig onderzoek naar 

 den toestand van de visscherij en de Industrie van Zeeproducten 

 in de Kolonie Curagao, 1907, p. 319. — A. Milne Edwards and 

 E. L. BouviER, Mem. Mus. Comp. Zool., vol. 47, p. 251, pi. 8, figs. 

 1-3, 1909. — Boone, Bull. Bingham Oceanog. Coll., vol. 1, art. 2, 

 p. 82, 1927. 



Sicyonia carinata H. Milne Edwards, Ann. Sci. Nat., t XIX, p. 344, 

 pi. IX, fig. 9, 1830 ; Hist. Nat. des Crust., vol. II, p. 410, 1837.— 

 A. White, List Crust. Brit. Mus., p. 79, 1847.— Dana, U. S. 

 Explor. Exped. Crust., vol. 13, p. 602, pi. 40, fig. 1, 1852.— von 

 Martens, Arch. f. Naturg. Jahrg., vol. 38, p. 142, 1872. — King- 

 sley, Proc. Acad. Nat. Sci. Phila., 1879, p. 427. — Spence Bate, 

 Ann. and Mag. Nat. Hist., ser. 5, vol. 8, p. 367, 1881 ; Kept. Voy. 

 ''Challenger" Zool., vol. 24, p. 294, pi. 43, figs. 2-3, 1888. 



Eusicyonia dorsalis (Kingsley). 



Plate 38. 



Type: Taken at Fort Jefferson, Florida, by Lieutenant W. H. 

 Jaques, U. S. N., deposited in the Peabody Academy of Science, at 

 Salem, Mass. 



Distribution: "West Indian region; frequently found among the 

 ribbon grass. 



Material examined : One specimen, taken in 2 fms.. Port Tanamo, 

 Cuba, February 23, 1925, by the "Ara." 



Technical description : This species is the West Indian analog of 

 E. picta Faxon of the American Pacific waters. E. dorsalis is readily dis- 

 tinguished from the other West Indian species by the dentition of its ros- 

 trum, which is subacute, extending beyond the eyes, somewhat elevated 

 distally, armed on the upper margin with three small teeth and with the 

 apex bifid, each angle forming a tooth ; on the inferior margin there is 

 a subdistal tooth opposite the subdistal tooth of the upper margin. 

 The carapace has a dorsal carina which is interrupted by two teeth, 

 the smaller anterior one not far behind the base of the rostrum and in 



