| OCR Text |
Show 1876.] MR. G. E. DOBSON ON THE MOLOSSI. 717 Premaxillary bones separate in front or conjoined by cartilage only, upper incisors close to the canines by their bases, separate in front, their cusps converging inwards and forwards. Bange.-Generally distributed throughout the tropical and warmer parts of the temperate zones of both hemispheres. In the following analytical table of the species, and in the subsequent descriptions, reference is often made to the different parts of the ear-conch which are shown and named in the drawing (see p. 716), which represents, in half-shading, the head of Nyctinomus macrotis, Gray. Synopsis of the Species. I. Premolars 2-2 2-2* Integument of the ears thick, opaque; keel of the ear-conch thickened in lower third ; antitragus separated by a deep notch. a' Lips smooth; inner margins of the ears arising from the muzzle by distinct points of origin; tragus broad, rounded off above. a. Antitragus irregularly quadrate ; lower incisors 4 b' Lips furrowed by deep vertical wrinkles. a". Ears separate or conjoined at the bases of their inner margins only; tragus broad, rounded off above. a'". Ears conjoined at the bases of their inner margins; gular sac distinct in 6*. /3. Antitragus obliquely triangular, rounded; lower incisors 6 b'". Ears separate ; no gular sac. y. Antitragus half oval. a'. Lower incisors 4 3. /3'. Lower incisors 6 4. b". Ears conjoined by a more or less deep band; tragus small; no gular sac. c'". Ears conjoined at the bases of their inner margins. a. Fur unicoloured; wings from the lower end of the tibia? 5. /3. Fur greyish on the surface; wings from the middle of the tibiae ... 6. d'". Ears conjoined by a deep band in front. a. The first upper premolar stands in the tooth-row. a'. Lower third of the ear-keel much thickened and flattened externally 7. j3'. Lower third of the ear-keel slightly thickened, not flattened externally. a". Fur of the chest and abdomen uniform in colour 8. /3". Fur of the lower half dofo mtehen cwhheistte and the ab9, 1. N. africanus, p. 719. 2. N. cestoni, p. 719. N. cegyptiacus, p. 721. N. tragatus, p. 721. N. plicatus, p. 721. N. bivittatus, p. 722. N. brachypterus, p. 722. N. pumilus, p. 723. N. limbatus, p. 724. |
