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Show J MR. M. JACOBY ON NEW COLEOPTERA. 807 Fronneth^Hefmunrda T ^ °l UsS Spread in the followinS *•*** u^per parts of Z n e r A ^ eaStmi P0rtion of Afghanistan, the stan the Tian % ' S ? the eastem Portion of Western Tuke-m ^ t a i L m L toih°r ^ H . m o u * » ™ > -nd also the Alatau TelZZtZlvaTf T*' ^ eXtend alon^ the Himalayan The'se fiS £ / ,? h6-m(lSt easter1^ ?art of Assam* rule d r a S t f f ^tkoracznre) are confined to cold regions, as a river e^d i L l i ?!? P0ssessi»S sn°w-fed rivers, many of which rY:rnrld,srof China' ^the H^ - £££ *, t T h l \ \ N e m j C i ^ a r e l i k e w i se generally distributed; and it is remarkable, as I have already observed, that all are scaleless. The same appears the rule in Western Turkestan theTfishernf Y°l 13bS*$ T "SW ^ arrive at> after examining the fishes of Yarkand and the adjoining countries is, that we find a peculiar group of Carps (Schizothoracina) which has spread almost due east and west from the cold and elevated regions of Eastern lurkestan but of which the southern progress has been barred by the Himalayas. J 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 oi 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 n e w Genera and Species of Phytophagous Coleoptera. By M A R T I N J A C O B Y. [Received November 20, 1876.] Family CRIOCERID^E. Genus C R I O C E R I S , Gfeoffroy. 1. C R I O C E R I S A U S T R A L I S , 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 w hich is the shortest, the fifth the longest; thorax coloured as the head, subquadrate, with its anterior half greatly widened, deeply but not largely constricted behind its middle and transversely grooved near the base smooth and shining; elytra much wider than the thorax, a little 53* |