BAHAMA CRUSTACEA. 251 



Lot ((f) may possibly be a variety as the thumb is shorter than 

 the typical minor, but otherwise there seems to be no difference. 



6i. Alpheus saulcyi Guerin. 



Guerin, in Hist, du Cuba, 1857. 



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



(a) 5 specimens, from green sponges. Febr. '90. 



(8) I specimen, near Nassau, Febr. 5, '90. 



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



(</) I specimen, from sponge, Mar. i, '90. 



{/) I specimen, from sponge, Mar. i, '90. 



(/") 2 specimens, Nassau, N. P., Jan., '90. 



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., Febr. 

 20, '90. 



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 project- 

 ing beyond carapace. The eye is seen through the somewhat 

 transparent carapace as in Alpheus. Inner antennae, with stylo- 

 cerite reaching to distal end of second segment 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 pedun- 

 cles of inner antennae, broad and fringed with hairs. Third 

 pair of maxillipedes 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. Mar- 

 gin of chela entire, length 5 mm., breadth 2.5 mm. Carpus 



