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Show 444 MR. G. E. DOBSON ON A N E W B A T . [June 1, conch is obtusely rounded off and the emargination beneath it externally is very shallow ; the inner margin of the conch is also more convex', so as to project forwards as far as the extremity of the muzzle ; above the nasal apertures the superior surface of the face terminates by forming a small rounded wart-like process covered on all sides, except iu front, by thick-set hairs, in front it is naked with a pro- . jecting upper margin; the lower lip is reflected outwards as in N. stramineus, but beneath it, in front, there is, as in the species of Chilonycteris (Phyllostomidse), but much less developed, a small horizontal cutaneous projection, like a second lower lip. Wings very like those of N. stramineus, but the wing-mem brane is attached high up, at the junction of the middle and lower thirds of the tibia ; the interfemoral membrane, the tail, and the calcanea are exactly similar to the same parts in that species. Foot extremely small, appearing scarcely half the size of that of N. stramineus. Fur above pale yellowish brown at the base, the Head of Natalus micropus. terminal half reddish or chestnut-brown ; beneath pale yellowish brown throughout. This is the appearance of the fur in alcohol. Upper incisors like those of N. stramineus, but the outer incisor on each side, instead of exceeding the inner in cross section, is equal to or even smaller than it; upper premolars as in that species, but the second premolar is still more widely separated from the third ; lower incisors, premolars, and molars also quite similar. Length, head and body, 1*5 inch ; tail 1*85 ; head 0*65 ; ear 0*5; forearm 1*3 ; thumb 0*15 ; third finger-metacarpal 1*5, 1st. ph. 0*55, 2nd. ph. 0*7; fourth finger-metacarp. 1*1, 1st. ph. 0*35, 2nd ph. 0*35; fifth finger-metacarp. 1*05, 1st. ph. 0*35, 2nd. ph. 0*35; tibia 0*65 ; foot 0*25. Hab. Environs of Kingston, Jamaica. Natalus lepidus, Gervais, is still smaller, has a differently formed tragus, and is also easily distinguished from both this species and N. stramineushy its dentition. (See Catal. Cbiropt. Brit. Mus. 1878, p. 344.) |