From the Annals and Magazine op Natural History, 



Ser. 8. Vol. i., Ajn-il 1908. 



Some Species of Leptocheirus, a Genus of Amphipoda. 

 By Canon A. M. NORMAN, M.A., D.C.L., LL.D., F.R.S. 



[Plates xn. & xm.] 



In a work published in 1906 on the Crustacea of Devon and 

 Cornwall* the four species then known as denizens of the 

 eastern side of the North Atlantic were described, and three 

 of them were figured. Since that time two other undescribed 

 species have come into ray hands, one of which has been 

 found in brackish water in Norfolk by Mr. Robert Gurney, 

 who has placed it in my hands for description, and a single 

 specimen of the other has been found by me among material 

 which I dredged in 1880 in the Fosse de Cap Breton, in the 

 Bay of Biscay. These two species I now describe, and 

 notice the seventh species known on the western side of the 

 Atlantic, namely Leptocheirus pinguis of Stimpson. 



Leptocheirus subsalsus, sp. n. (PI. XII, figs. 1-6.) 



The first segment of the urosome has its hinder margin 

 smooth. The secondary appendage of the antennule (fig. 1) 

 consists of only a single joint, which is not longer than the 

 first joint of the filament, which latter is 13-jointed. The 

 first gnathopod (fig. 2) has the coxa (epimera) of nearly 

 oblong shape, the extremity broad and very obtusely rounded ; 

 the propodos is much shorter than the carpus ; widening from 

 its base to its wide transverse extremity. The finger of 

 equal length with the palm. Second gnathopod (fig. 3) has 

 the basal joint very long, equalling in length the whole of 

 the rest of the limb j the setaj on the hinder margin of the 



* ' The Crustacea of Devon and Cornwall,' by Canon A. M. Norman, 

 F.R.S. &c., and Thomas Scott, LL.D., F.L.S. 1906. William Wesley 

 &Co. 



