84 CRUSTACEA FROM THE BAHAMAS 



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 wa- 

 ters of both hemispheres. It has been reported from : Indian Ocean 

 (Olivier), Australia (Peron and Lesneur), Borneo and Philippines 

 (Adams and White), South Pacific (Dana), Ambonia (DeMan), 

 Fiji Islands and Bermuda (Bate), Cuba (Von Martens), Bahama 

 Islands (Herrick). 



I introduce a figure of this specimen (PL xxix. Fig. i), although not 

 a new species, in order to compare it with the two following species, 

 figures of which have not yet appeared. 



51. Stenopus semilaevis Von Martens (PL xxix. Fig. 2) 



Von Martens, Ueber Cubanische Crustaceen, Arch. f. Naturgesch., 

 Bd. 38, p. 144, 1872. 



(a) I ^,1 9 with ova. Under large sponge, New Providence, 

 Jan., 1890. 



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 unde- 

 scribed in the Berlin Museum and which he called S. semilcBvis. 



Von Martens' description (I.e. supra) I reproduce: "Cephalo- 

 thorax spiny; abdomen smooth; rostrum short, not longer than the 

 peduncle of the inner antennae, compressed laterally and prolonged as 

 a ridge nearly to the sharply marked cervical furrow, above with four 

 teeth, below teeth wanting. Carpus of third pair of pereiopods quad- 

 rangular as in S. hispidus, but the chelae compressed, with smooth 

 sides and not so long; chelae, including the dactyl, twice as long as 

 broad ; the upper margin sharper than the under and smooth, the under 

 serrated. The dactyl half as long as the palma; the back of the dactyl 

 keeled, serrated. Length from tip of rostrum to tip of telson 12 mm. 



