Boone, Crustacea, Cruise of "Alva," 1931 131 



References: Alpheus ventrosus, Edwards, H. M., Hist. Nat. 

 Crust., 1837, t. II, p. 352.— Coutiere, H., Bull. Paris Mus. 

 Hist. Nat., 1900, t. VI, p. 414; Faun, and Geogr. Maldive and 

 Laccadive Arch., vol. II, pt. 4, 1905, p. 882. — Nobili, G., 

 Ann. Mus. Nat. Paris, ser. 9, t. IV, 1906, p. 32. — DE Man, 

 J. G., Rept. "Siboga"-Expeditie, Decapoda, pt. I, Family AU 

 pheidae, Monogr. 39a-l, Livr. LX, 1911, p. 339. 



Crangon ventrosus, Edmondson, C. H,, Bull. B. P. Bishop Mus., 

 vol. V, 1923, p. 28, 29. 



Alpheun laevis, Randall, J. W., Journ. Acad. Nat. Sci. Phila., vol. 

 VIII, 1839, p. 141.— Dana, J. D., Rept. U. S. Explor. Exped. 

 Crust., vol. XIII, pt. 1, 1852, p. 556; Atlas, 1855, pi. 35, fig. 

 8a-h. — Heller, C, Reise Osterreich. Fregatte "Novara," 

 Zool., Th. II, Abh. Ill, 1865, p. 107.— Bate, C. S., Rept. Voy. 

 H. M. S. "Challenger," Zool., vol. XXIV; Macrura, 1888, 

 vol. XXV, p. 555, pi. 99, fig. 3.— DE Man, J. G., Abhandl. 

 Senckenb. Naturf. Gesellsch., Bd. XXV, 1902, p. 861. 



Alpheus braschi new species 



Plate 34 



Type: One small, ovigerous female, taken at Pago Pago, 

 Samoa, September 2, 1931. 



Distribution : Restricted to the type. 



Technical description: Rostrum acuminate, strongly cari- 

 nate, anteriorly projecting as far forward as does the first an- 

 tennular article; the sides of rostrum slope decidedly downward 

 from the median carina; width at the base of rostrum between 

 the orbits equal to about two-fifths of the anterior rostral process ; 

 the rostrum is separated from the ovoidal orbits by an incurved 

 channel, which is narrow and continues backward to the base of 

 the orbit posteriorly. The rostral carina is continued posteriorly 

 for three-fifths of the length of the carapace, vanishing by dimin- 

 ishing height. 



The antennulae have the peduncle four-fifths as long as the 

 antennal peduncle and scaphocerite. The first antennular article 

 extends as far as does the rostrum; the second article is longer 

 than the dorsally visible portion of the first article and is twice as 

 long as the third article; the flagellum has the smaller, outer 



