BAHAMA CRUSTACEA. 241 



pare this already described species of Stcnoptis with the two 

 species following. Rostrum with a median dorsal row of 6 

 spines bifurcated at extremity, a lateral row of 3 or 4 spines on 

 each side of rostrum ; no ventral spines. Back of the sixth 

 dorsal spine a double row. Rostrum does not reach to end of 

 peduncle of inner antennae. Carapace of thorax very rough, 

 with firm, sharp spines which are longer on the dorsal than on 

 the lateral regions. Abdomen thickly armed with outwardly 

 projecting spines. Third pereiopod long, abundantly armed 

 with spines. The propodos with six rows above and below 

 and two on each lateral surface. 



Measurements: Total length 50.5 mm., length of cephalo- 

 thorax 16.5 mm., of abdomen 34 mm., of rostrum 6 mm., of 

 telson 9.5 mm. 



Unless the Eastern form should prove distinct from the West 

 Indian, we have a widely distributed species occurring in the 

 warm waters of both hemispheres. It has been reported from : 

 Indian ocean (Olivier), Australia (Peron and Lesneur), Borneo 

 and Philippines (Adams and White), South Pacific (Dana), 

 Amboina (DeMan), Fiji Islands and Bermuda (Bate), Cuba 

 (Von Martens), Bahama Islands (Herrick). 



I introduce a figure of this specimen (PI. xxix, Fig. i), al- 

 though not a new species, in order to compare it with the two 

 following species, figures of which have not yet appeared. 



51. Stenopus semilsevis Von Martens (PI. xxix, Fig. 2). 



Von Martens, Ueber Cubanische Crustaceen, Arch, f Natur- 

 gesch., Bd. 38, p. 144, 1872. 



{a) \ $ , I 9 with ova. Under large sponge. New Provi- 

 dence, Jan., '90. 



My specimens correspond very closely, except in certain 

 minor particulars noted below, with the description given by Von 

 Martens of a species ''probably from the West Indies," which 

 he found undescribed in the Berlin Museum and which he called 

 6". semilcBvis. 



Von Martens' description (1. c, supra) I reproduce: "Cephalo- 

 thorax spiny ; abdomen smooth ; rostrum short, not longer 



