76 Records of the Indian Mttseuiu. [Vol. VI, 



rivers, in places running noisil}' and rapidly through channels 

 filled with boulders, again spreading out into marshes and great 

 shallow lakes in the broad flat upland valleys.^ At Ling-ma-tang, 

 Phari and around the Rham Tso are the same widespreading 

 grassy downs, although it must be admitted that to the north of 

 the watershed the grass is not very abundant. It is a region 

 barren of trees, — for twenty miles on the south and forty miles to 

 the north of the Tang-la not a single tree can be seen. It is a 

 very different country from the south slope of the Himalayas with 

 its narrow valleys, its plunging torrents, and hillsides covered with 

 pines. 



5. The collection with which the present notice deals con- 

 tains some specimens which can be referred without hesitation to 

 Stoliczka's species, others which obviously belong to Ssewerzoff's, 

 and again others which appear to be intermediate between the 

 two. It was necessary, therefore, to enquire into the validity of 

 the separation of the two species, taking into consideration the 

 knowledge gained by the study of this new collection. 



Herzenstein (4, p. 199), in defining the species 5. severzovi, 

 writes: " Diese Form ist auf Grund von Exemplaren beschrieben 

 worden, welche z. Th. schon vom verstorbenen Prof. Kessler von 

 dem typischen Sch. sioliczkae als Sch. macrophthalmus oder Sch. 

 stoliczkae var. macrophthalnia getrennt worden sind. Der Haupt- 

 underschied besteht meiner Meinung nach in der relativen Lage 

 der Mundspalte und des unteren Augenrandes, wie ich es in der 

 Synopsis angefiihrt habe. Freilich lassen sich einige der kleineren 

 Exemplare weniger sicher nach diesem Kennzeichen bestimmen. 

 Doch halte ich es vorlaufig fiir mehr passend beide Formen zu 

 trennen, da Sch. severzovi ausserdem noch einige besondere 

 pravalierende Variations-Neigungen zu zeigen sheint, so namentlich 

 ein in Durchschnitt grosseres Auge und dunklere Farbung." 



Alcock also does not accept the separation without some 

 doubt (i, p. 14), "I was at first inclined to disagree with Herzen- 

 stein in separating this species from 5. stoliczkae, but on comparing 

 the large series of the latter in the Indian Museum with those 

 collected by myself among which are numerous spawning males 

 and females, I can find five ripe males and a ripe female all taken 

 at the same spot, which differ constanth'- from ripe adults of 5. 

 stoliczkae in the following characters : — 



(r) they are smaller, sexually mature individuals not being 

 longer than 175 mm. ; whereas I can find no sexually 

 mature 5. stoliczkae less than 200 mm. long, while 

 most are about 250 mm. and some nearly 350 mm. ; 



(2) the body is higher, its height in the adult being one- 

 sixth of its total length ; whereas in typical adults of 

 S. stoliczkae the body-height is only one-seventh or 

 one-eiffhth of the total length ; 



1 See Rec. Ind. Mns., vol. ii, part iv, pi. xxvi. The upper photograph 

 represents Chain Bridge. 



