CRUSTACEA FROM THE BAHAMAS 



93 



6i. Alpheus saulcyi Guerin 



Guerin, in Hist, du Cuba, 1857. 



Herrick, Memoirs Nat. Acad. Sci., Vol. V, p. 381. 



{a) 5 specimens, from green sponges, Feb., 1890. 



{h) I specimen, near Nassau, Feb. 5, 1890. 



(c) I specimen, $ , from green sponge. 



{d) I specimen, from sponge, March i, 1890. 



(e) I specimen, from sponge, March i, 1890. 



(/) 2 specimens, Nassau, N.P., Jan., 1890. 



Range : West Indies. 



Found at Nassau, Martinique. 



62. Athanas ortmanni n. sp. (PI. xxx, Fig. 7) 



(a) I specimen. Along shore, near Nassau, N.P., Feb. 20, 1890. 



Rostrum slender and pointed, reaching a little beyond the second 

 joint of peduncle of inner antennae. Antero-lateral margin of carapace 

 extends obliquely backward, prolonged in front of eye into minute 

 spine. Eye-stalk short, not projecting beyond carapace. The eye is 

 seen through the somewhat transparent carapace as in Alpheus. 

 Inner antennae, with stylocerite reaching to distal end of second seg- 

 ment of peduncle. From the peduncle arise two flagella of nearly 

 equal length, the upper somewhat more slender than the lower, bearing 

 on the fourth segment from base a minute, subsidiary flagellum. 



Outer antennae with scaphocerite nearly as long as the peduncles of 

 inner antennae, broad and fringed with hairs. Third pair of maxilli- 

 pedes reach slightly beyond the distal end of scaphocerite. 



First pair of pereiopods: that on the right side is robust with 

 swollen chela, terminating in slender hooked fingers which are minutely 

 serrated on the opposing edges. Margin of chela entire, length 5 mm., 

 breadth 2.5 mm. Carpus short. Distal end of meros reaches to 

 extremity of third pair maxillipedes. Left chelapod lacking. 



Second pair of pereiopods slender, with very small chelae. Carpus 

 five-jointed; proximal segment equal in length to the four distal seg- 

 ments. Remaining three pairs of pereiopods similar to each other and 

 equal in length to the second pair. Pleopods narrow and biramous. 

 Telson narrow and compressed, with smooth margins. Uropods 

 slightly longer than telson. 



