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Show 4 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. lower jaw, are somewhat crowded, the intermediate pair are slightly larger than the lateral ; they are all deeply notched, and broad at the apex. The cerebral portion of the skull is much arched and the anterior portion is depressed. The zygomatic arch is imperfect; sec Pl. 35. figs. 2. The noseleaf is lanceolate, and of moderate size : the ears are also of moderate size ; they are ronnded at the tip ami emarginated on their exterior edge: the tragus is elongated, and suddenly attenuated towards the apex; the .outer margin is deeply notched towards the base, and very obscmely crcn ulated above this notch. The interfemoral membrane is of moderate extent, and emarginated posteriorly. The tail, which is very slender, is entirely enclosed by the interfemoral membrane, and the visible portion appears to consist of but two joints, which together, measure about two and a half lines in length. The basal half of the thumb is enclosed in membrane. The fur is soft and rather long. The general tint of the upper and under parts of the body is brownish-ash; the hairs on the neck and on the whole of the back are grey at the base, then white, or nearly so, brownish-ash near the tip, and whitish at the tip. On the belly the hairs are nearly of an uniform brown-ash colour, their apices only being whitish. The ears, nose-leaf, and membrane of the wings, are of a sooty-black hue. In. Lines. ln. Lines. Length of head and body 0 Length of car antibrachium. l 4~ no ~c-lcaf 0 7 0 3 ~ thumb (claw included) 0 ilt Expanse of tho wings 10 0 tibi·• 0 7 Habitat, Pernambuco, Brazil. (August.) "This species appeared to be common at Pemambuco (five degrees north of Bahia). Upon entering an old lime-kiln in the middle of the day, I disturbed a considerable number of them : they did not seem to be much incommoded by the light, and their habitation was much less dark than that usually frequented as a sleeping place by these animals." D. I have named this species after Mr. John Gray, the author of several extensive memoirs on the order to which it belongs, and to whom I am indebted for :aluable assistance whilst comparing this and other species with those contained m the collection of the British Museum. 2. PHYLLOSTOMA PERSPICILLATUM. I find in Mr. Darwin's collection, a bat agreeing with the description of M. |