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Show 1875.] MR. G. E. DOBSON ON THE GENUS CHALINOLOBUS. 385 0"*15; forearm 1"*8; thumb 0"*3; second finger 3"*3; fourth finger 2"* 15 ; tibia 0"*75 ; foot and claws 0"*35*. Hab. New South Wales ; Tasmania. CHALINOLOBUS NIGROGRISEUS. Scotoqjhilus nigrogriseus, Gould, M a m m . of Australia, vol. iii. pl. 44. Head short, slightly elevated above the face-line; muzzle broad, shortly conical; nostrils prominent on the upper surface of the muzzle, projecting slightly by their inner margins in front, opening sublaterally, emarginate between, and closer together than in other species of this genus. Ears very rhomboidal in outline ; the outer and upper angle, forming the tip, rounded off; the lower half of the outer margin slightly reflected backwards at the edge; emarginate opposite the base of the tragus, and terminating in a distinct rounded lobe close to the angle of the mouth, not hanging vertically downwards at its termination as in C. gouldi; tragus expanded outwards above, reaching its greatest width above the middle of the inner margin, the breadth of the summit equal to the length of the inner margifi, which is straight or slightly concave. On the whole, the form of the tragus is very similar to that of C. gouldi. Wings to the base of the toes ; postcalcaneal lobe rounded, well developed, about the breadth of the foot from the tibia ; last rudimentary joint of tail free. Above deep black, the tips with a slight brownish or greyish tinge ; beneath similar, the tips ashy and generally of a lighter shade on the pubes and along the sides of the body. Distribution of the fur and dentition quite similar to those in C. gouldii. Length (of an adult cS preserved in alcohol): head and body l"-75; tail 1"*35; head 0"*55 ; ear 0"*5, tragus 0"*2x0"*12*; forearm 1"*35; thumb 0"*28; second finger 2"*6 ; fourth finger 1 "*7 ; tibia 0"*55; foot and claws 0"*28. Hab. Australia, northern and eastern coasts, Port Essington, Moreton Bay. CHALINOLOBUS ARGENTATUS, n. sp. The crown of the head is abruptly elevated abope the face-line as in Miniopterus, but to a much less extent ; muzzle short, very obtuse in front, broad and flattened above ; nasal apertures wide apart in front, separated by a slightly concave space, opening sublaterally, bounded laterally by the front margins of the labial glandular prominences which are separated from the nostrils above by a sulcus on each side* as in the other species of this genus. Beneath, on each side of the chin, below the under lip, a smooth broad rounded elevation exists separated from its fellow of the opposite side by the * The original description of this species scarcely occupies two lines, and applies equally well to at least twenty different species ; and the fact that all subsequent descriptions have been based on this and on the imagination of the describes and were not derived from au examination of the types, will explain m y reasons for giving so lengthened a description. P R O C ZOOL. Soc-1875, No. XXV. 25 |