| OCR Text |
Show 1876.] MR. G. E. DOBSON ON THE MOLOSSI. 729 on the muzzle by a low band at a distance from the end of the nose equal to the length of the base of the antitragus ; inner and outer margins of the ear-conch evenly convex above; ear-keel very deep and slender in lower third, where it is partly folded upwards and backwards, so as to present a flat surface externally; superior and inner margin of the conch with four minute horny projections ; antitragus rather small, but separated posteriorly by a deep notch, convex, about once and a half as long as high; tragus quadrate, with a straight superior margin and projecting outer angle, inner margin straight, outer slightly concave. Extremity of the muzzle very obliquely truncate. Upper lip very expansible, with a few deep vertical grooves. No gular sac. Thumbs and feet small. Wings from the lower end of the tibiae. Fur dark brown above and beneath, with slightly greyish extremities; the base of the hairs whitish. The face is nearly naked; a few hairs form a fringe along the anterior margin of the upper lip beneath the nostrils. With the exception of a narrow band of very short fine hairs, which extends on the upper surface of the wing-membrane behind the forearm to the carpus, the membranes external to the humerus appear to be quite naked; along the sides of the body the fur extends as far outwards, above and beneath, as a line drawn from the middle of the humerus to the knee. Upper incisors separated by a space in front; lower incisors 4, bifid, crowded ; internal basal cusp of canine small; first upper premolar small, conical, acutely pointed, in the centre of the rather wide space between the canine and second premolar ; second upper premolar with an acute internal basal cusp ; first lower premolar not crowded, as broad at the base as the second, which exceeds it (as in all other species of the genus) in vertical extent. Length (of an adult <J ) : head and body 3"*0 ; tail 2"*1, tail free from membrane 1"*1 ; head 1"*15; ear 1"*0, tragus 0"*15xO"*I ; forearm 2"*35; thumb 0"*35 ; second finger-metacarp. 2"*25, 1st ph. 0"*95, 2nd ph. 1"*1 ; third finger-metacarp. 2"*1, 1st ph. 0"*8, 2nd ph. 0"*1; fourth finger-metacarp. 1"*1, 1st ph. 0"'75, 2nd ph. 0"*2. Hab. Surinam. Type in the collection of the British Museum. 16. NYCTINOMUS MACROTIS. Nyctinomus macrotis, Gray, Ann. & Mag. Nat. Hist. 1839, p. 5; Gervais, Exp6d. Castelnau, Zoologie, p. 62, pl. xii. figs. 1 and 1 a (skull and teeth). Dysopes auritus, Natt., Wagner, Wiegm. Archiv, 1843, p. 368 ; Burmeister, Thiere Brasiliens, p. 69 (1854). Dysopes laticaudatus et D. cacus, Rengger, Saug. Paraguay, p. 88. ?Dysopes aurispinosus, Peale, United-States Explor. Exped. viii. p. 21. Ears large, nearly as long as the head, conjoined to a height of 0"*2 inch, the inner margins very convex and consequently close together for more than half their length above the band uniting their bases; integument forming the ear-conch very thin, translu- |
