214 Records of the Indian Museum. [Voiv. X, 



dumkash Pamir. Altitude, 15,600 feet. Collected 

 by Captain R. W. G. Kingston, I.M.S., 27th July, 

 1913. These Crustacea were numerous in pools near 

 banks of Killik River." 



On examination, the specimens proved to belong to the 

 variable and widely distributed species, Gammarus pulex, lyinn. 

 The record is interesting, however, in that it marks the highest 

 altitude from which this species has ever been collected, and 

 5000 feet higher than the previous highest record of 3200 metres 

 (10,500 feet), from which altitude Chevreux ("Etudes sur la 

 faune du Turkestan. II. Crustaces Amphipodes." Travaux de la 

 Soc. Imp. d. Nat. St. Petersbourg, t. XXXVII, 2, pp. 91-100, 1908) 

 has recorded this species from Lake Tchatyr-Koule in Turkestan. 



In the paper quoted, Chevreux records G. pulex from the 

 following localities :— 



Lake Issyk-Koule (16 15 met. altitude). Gorge de Karakol 

 (2000 met. altitude), and Lake Tchatyr-Koule (3200 met. altitude), 

 all in Turkestan ; so that its occurrence on the banks of the Killik 

 River, only some 130 miles south of the Gorge de Karakol is not 

 surprising. Chevreux points out that this species is variable in 

 certain of its characters, so that it might be useful to indicate the 

 nature of this variation in the present specimens. 



The posterior angle of the epimeral plate of the third segment 

 of the metasome is considerably more produced and pointed than 

 figured in Sars', Crustacea of Norway, Vol. I. Amphipoda. The 

 number of spines on the segments of the urosome shows consider- 

 able individual variation. The maximum number observed is two 

 median dorsal and a pair of lateral spines on each side on each of 

 the three segments, but the dorsal pair are absent from the last 

 segment in some of the specimens, and the lateral spines some- 

 times only number one on one or other of the segments. 



The accessory flagellum of the first antennae is only as long 

 as the first two joints of the main flagellum and is composed of 

 two well developed joints of equal size followed by a third 

 rudimentary joint. In this particular, the present specimens 

 agree with those from Lake Tchatyr-Koule mentioned by Chevreux. 



The telson has two or three spines and, in most cases, a 

 single seta at the apex of each lobe. The lateral spine of the 

 telson is placed much more distally and at the same time further 

 in from the margin than shown in Sars' figure of the type form. 



In all other characters, the present specimens agree very 

 completely with the descriptions and figures given by Sars for the 

 typical form and there is no reason to create a new species for the 

 trivial differences noted above. It seems, however, worth while 

 to place on record the capture of this species at the unusual 

 altitude of 15,600 feet. 



W. M. TATTERSAI.L. 



[In addition to the examples mentioned above, there are in the 

 Indian Museum collection specimens of Ganimarus pulex, kindly 



