1876.] MR. M. JACOBY ON NEW COLEOPTERA. 807 



The other genera are more or less spread in the following districts. 

 From the Helmund river and the eastern portion of Afghanistan, the 

 upper parts of the Oxus, and the eastern portion of Western Turke- 

 stan, the Tian Shan or Celestial mountains, and also the Alatau 

 mountains more to the south, they extend along the Himalayan 

 region, certainly as far as the most easterly part of Assam. 



These fishes (Schizothoracince) are confined to cold regions, as a 

 rule, or at least to localities possessing snow-fed rivers, many of which 

 livers end in lakes and do not go to the sea. They extend from 

 Eastern Afghanistan and Western Turkestan through Tibet, and the 

 most westerly portion of China, along the Himalayas to the hills in 

 the Yunnan direction. 



Loaches (Nemacheilus) are likewise generally distributed ; and it 

 is remarkable, as I have already observed, that all are scaleless. The 

 same appears the rule in Western Turkestan. 



The conclusion, I think, we may fairly arrive at, after examining 

 the fishes of Yarkand and the adjoining countries is, that we find a 

 peculiar group of Carps (Schizothoracince) which has spread almost 

 due east and west from the cold and elevated regions of Eastern 

 Turkestan, but of which the southern progress has been barred by 

 the Himalayas. 



If we look to the south we see, as it were, that a wave of tropical 

 forms of fishes has, at a prehistoric period, expanded over that portion 

 of the globe where the Nicobars, Andamans, and the most southern 

 portions of the continent of Asia now are, that this fish-fauna has its 

 northward progress arrested by some cause at or near where the 

 Himalayas now exist and mark the division between the fish-fauna 

 of India and that of Turkestan. 



3. Description of new Genera and Species of Phytophagous 

 Coleoptera. By Martin Jacoby. 



[Received Xoveuiber 20, 1876.] 



Family Criocerid^e. 

 Genus Crioceris, Geoffroy. 

 1. Crioceris australis, sp. nov. 



Oblong, fulvous, fuscous below ; head a little darker-coloured 

 than the elytra, finely golden pubescent at its lower half, impunctate 

 at the remainder, convex between the eyes, the frontal oblique 

 grooves feebly impressed and a distinct transverse depression above 

 them ; antennae scarcely half the length of the body, entirely black, 

 with rather short cylindrical joints, the second of which is the short- 

 est, the fifth the longest ; thorax coloured as the head, subquadrate, 

 with its anterior half greatly widened, deeply but not largely con- 

 stricted behind its middle and transversely grooved near the base, 

 smooth and shining ; elytra much wider than the thorax, a little 



53* 



