138 Bulletin, Vanderhilt Marine Museum, Vol. II 



is seven-segmented, narrow, the tip triangulate. The female is seven- 

 segmented, wide, oval. One female is carrying about 300 eggs. 



The eyestalli is stocky with a tongue-like projection on the upper 

 surface of the cornea and tufted with setae ; the cornea is set obliquely 

 at the end of the stalk and is slightly larger than the stalk. 



The antennulae and antennae offer no specific characters. 



The male chelipeds are markedly unequal, the larger one having the 

 palm one and one-half times as high as the smaller. Each has the 

 merus three-sided, closely appressed to the body, its distal end armed 

 with two or three spines and scarcely visible beyond the carapace ; the 

 carpus is large convex dorsally, with a blunt inner lateral angle, the 

 upper surface covered with coarse spines ; the outer and upper surface 

 of the palm of the small cheliped is covered with longitudinal rows of 

 acute spines, a few of these smaller spines occur on the base of the 

 upper finger. The palm of the large cheliped is armed on its upper 

 and proximal half with rows of spines ; these rows shorten diagonally, 

 the distal lower diagonal half of the palm being smooth. The fingers 

 are dark brown, the color not extending upon the palm; slightly 

 deflected; the proximal finger stouter than the upper finger, which 

 is more curved, both dentate ; the fingers of the smaller chelipeds meet- 

 ing along the cutting edge, those of the larger claw with an elliptical 

 gape, only the tips meeting. The female chelipeds are also decidedly 

 unequal. 



The ambulatories are rather slender, with the meral, carpal and 

 propodal joints setose and spinulose on the anterolateral margins ; the 

 dactyli are long, subcylindrical, with very acuminate tips. 



Synonymy. — Micropanope spinipes A. Milne Edwards, Miss. Sci. 

 Mex., t. V, part 1, p. 326, pi. 54, figs. 3-3c, 1879 ; Bull. Mus. Comp. 

 Zool., vol. 8, p. 13, 1880. — ^A. Milne Edwaeds and Bouvier, Mem. 

 Mus. Comp. Zool., vol. 47, p. 323, 1923. 



Pilumnus spinipes Rathbun, Bull. Labr. Nat. Hist. Univ. Iowa, vol. 



4, p. 264, 1898. — ^Verrill, Trans. Conn. Acad. Arts and Sci., vol. 



5, p. 577 ; ibid., vol. 13, p. 361, text fig. 20, pi. 26, fig. 1, 1908. 



Pilumnus andrewsi Rathbun, Bull. Labr. Nat. Hist. State Univ. Iowa, 

 vol. 4, p. 266, pi. 5, fig. 2, 1898 ; Proc. Wash. Sci., vol. 2, p. 139, 

 1900 ; Bijdragen tot de Dierkunde, natura artis magistra te Am- 

 sterdam, 23E Afl., p. 16, 1924. 



