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Show 512 ON SOME MAMMALS FBOM ECUADOE. [Apr. 21 Genus PUDUA. Size very small. Hair coarse and brittle. Horns simple spikes. Metatarsal and metacarpal joints short. Tail very short or wanting. Ears short and rounded. No turn in the hair of the face. Infranarial portion of the rhinarium deep. Canines absent. Middle pair of incisors not broadly spatulate. Ascending rami of the premaxillaB may or may not reach the nasals. Lachrymal pit oval and very deep. Auditory bullae not inflated. Ectocuneiform and navicular-cuboid bones united. Metatarsal bone not twice and metacarpal bone not lj the length of the upper molar series. 2. ICHTHYOMYS SODEESTEOMI, sp n. (Plate XX.) The general colour of the whole of the upper parts dark olive-brown, the main coat of black-brown fur being narrowly tipped or having a subterminal band of dull yellow; thickly interspersed are longer shining black hairs, these being longest on the hind quarters, where they are broadly tipped with silvery white. On parting the fur the only colour found is soft grey, all the main fur having long fine footstalks, so that the whole coat below the surface, save for the few coarse shining hairs, is of a uniformly fine texture and very dense. Ears same colour as the head. The tail, which is thickly haired, is entirely dark brown or black, the fringe of longer hairs on the lower side being of absolutely the same colour; the fore feet are covered with short black hairs, with a few longer white hairs at the base of the claws ; the hind feet are black above and below, excepting a few grey hairs round the claws and on the inner side of the tarsus the fringe of stiff hairs is white; the whole of the uuderparts from the chin to the vent are dirty white, the under-fur being grey and the outer silvery white; the inner sides of the fore and hind limbs are of a more pure white; the whiskers are black or white according to the position in which they grow on the face, those placed high up being black, and there are a few particoloured ones in the middle growth. Palate-ridges 3-3. Mammae 6 : one pair on the breast and two pairs on the belly. Measurements of type skin( $ ad. no. 06, i. 28.2,in Brit. Mus.):- Head and body 180 m m . Tail 150 m m . Hind foot 31-5 mm. Ear 8*5 m m . Forearm and hand 31 m m. Skull.-Greatest length 31*5 mm.; greatest breadth 16 mm. Nasals - length 12 mm.; breadth 3*9 mm. Intertemporal- breadth 4-9 m m . Interparietal-length 2 m m . ; breadth 3 mm. Basal-length 29 mm.; basi-facial 18-5 mm.; basi-cranial 10-5 mm. Palate-length 16 mm.; breadth,outside - 6mm.,inside -3mm.; diastema 8*5 mm.; foramina 5-5 m m . Upper molar series-length 4*3 m m . Lower jaw-condyle to incisor tips 20-5 mm. Hab. Bio Machangara, Ecuador. "Water Bat. Feb. 1895" (L. S.). The skull is remarkably delicate and fragile for such an old animal (the teeth being much worn), and is smaller and narrower |