CRUSTACEA. 



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of the legs of the first pair, but none on the second and third 

 pairs of legs; the fifth legs are scarcely longer than the fourth; 

 and the dactyli, in both pairs, about equal the penultimate joint iu 

 length. The rami of the uropoda are rather narrow ovate, and longer 

 than the terminal segment, slightly pubescent above and with long 

 ciliated margins. Length of tho larger specimen (a male) about 

 1 inch 2! lines (31 millim.). 



Cerf fsland, 10 fms. (No. 232) ; two males. 



The description is taken from the largest specimen. 



This species is distinguished from most of its congeners by the 

 form and extreme brevity of the rostrum, the ai'inuture of the 

 terminal segment, &c. 



From P. ? podophihalmus, Stimpson, from Hong Kong*, it is at 

 once distinguished by the length of the eye-peduncles and an- 

 tennules. 



It is apparently allied to P. pahnensis, Haswcll, from Palm Island, 

 which has, however, a longer rostrum with more numerous teeth, 

 the second to sixth segments of the postabdomen carinated, &c. 



There are in the collection three small specimens of a species of 

 this genus, also obtained at Cerf Island with P. ricktersii, which I 

 refrain at present from designating by a distinct specific name, 

 although I cannot refer them to any described species. The body 

 is everywhere covered with a short hispid pubescence. The rostrum 

 is short and slender and acute, scarcely reaches beyond the eyes, and 

 is armed above with five teeth, whereof the first is separated by a 

 wider interval and is placed on the gastric region, the second tooth 

 on the postfrontal region, just behind the anterior margin of the 

 carapace ; the second to sixth segments of the body are carinated 

 (as in P. pahnensis) ; on the sixth segment the carina terminates in 

 a small spinule. From P. ricktersii they seem to be distinguished 

 by the much slenderer, more acute, and longer rostrum, and the 

 lenger carina of the postabdomen ; and from P.palmensis, Haswell, 

 with which, however, they may prove to be identical, by the fewer 

 rostral teeth, &c. 



STOMATOPODA, 



1. Gonodactylus chiragra, Fabricius. 



An adult female is in the collection, from Mozambique, beach 

 (No. 224), and small specimens from the Seychelles, 4-12 fms. 

 (No. 194); Darros Island, 22 fms, (No. 185); and Etoile Island, 

 13 fms. (No. 191). 



* This species cannot be included in Penaus as recently defined by Mr. 

 Spence Bate (Ann. & Mag. N. H. t. c. p. 173, 1881). 



