Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 85 



there are two spines on the gastric region, the anterior of these is in 

 the center of a transverse row of five small spines ; also in the median 

 line there is one spine on the genital, two on the cardiac, and one on 

 the intestinal region. There is one spine at the anterolateral angle 

 of the buccal cavity and five or six on the outer region above the 

 lateral margin of the hepatic and branchial regions, and three other 

 spines forming a triangle on the inner part of the branchial region. 

 The preorbital spine is acute, outward directed, longer than the post- 

 orbital spine which is also acute ; there is one closed sinus on the upper 

 orbital margin which bears a tooth at its distal angle. The basal 

 antennal segment bears a tooth at its upper distal angle which is 

 applied to the infero-orbital margin, and another node or tooth at its 

 lower distal angle. 



The eyes are small with the upper lateral surface of the cornea 

 protected by a calcareous, tongue-like formation. 



The chelipeds are equal in both sexes, larger in the male than in 

 the female, moderately long, slender, the merus is elongated, slenderer 

 basally than distally; the carpus is short and rounded; the male 

 propodus has the palm about as long as the merus, compressed, sub- 

 cylindrical, smooth; the fingers are half as long as the palm, with a 

 slight elliptical gape proximally, the distal two-thirds closing one 

 upon the other, the edges crenulate, tips white. 



The ambulatories are long, slender, but strong, with stocky, curved 

 dactyli. 



Synonymy. — Libinia duhia Milne Edwaeds, Hist. Nat. Crust., vol. 1, 

 p. 300, pi. 14, his, fig. 2, 1834. — Streets, Proe. Acad. Nat. Sci. 

 Phila., p. 104, 1870. — A. Milne Edwards, Crust. Reg. Mex., p. 

 129, part, 1878; pi. 18, figs. 5 to 5d, not pi. 26.— Rathbun, 

 Proe. U. S. Nat. Mus., vol. 15, p. 237, pi. 31, fig. 1, 1892.— Hay 

 and Shore, Bull. U. S. Bur. Fish., vol. 35, p. 456, pi. 38, fig. 5, 

 1918.— Rathbun, Bull. U. S. Bur. Fish., 129, p. 313, pi. 114 and 

 115, pi. 122, fig. 1, 1925. 



Lihinia canaliculata DeKay, Crust, of N. Y., p. 2, part , 1844. 



Lilinia distincta Guerin, La Sagra's Hist. Cuba, vol. 7, pt. 2, Crust. 

 p. xii. — ^Brito Capello, Jorn. Sci. Lisboa, vol. 3, No. 12, p. 263, 

 pi. 3, fig. 2, 1871. 



Lihinia suhspinosa Streets, Proe. Acad. Nat. Sci. Phila., p. 105, 1870. 



