| OCR Text |
Show 1905.] OF THE GENUS RHINOLOPHUS. 89 Skull. As in borneensis, but considerably smaller; the nasal swellings are, also proportionately, narrower than in the Bornean species (perhaps as a consequence of the much smaller nose-leaves). Dentition (two skulls). p3 half in row (one skull), or external (the other). p2 and p4 in the former skull, of course, separated ; in the latter almost in contact, p2 in the tooth-row. Upper canine and p4 widely separated. Type. 5 ad. (in alcohol). S. Camarinas, Luzon, Philippine Islands. Collected by L. M. McCormick, Esq. Un. St. Nat. Mus. no. 101966. Remarks. This species is readily distinguished from any other form of the simplex group by its small size, narrow horseshoe, and short ears. The shape of the connecting process ought to prevent a confusion with the equally small species of the minor group, to which it, in other respects, bears a very striking external resemblance. 8. R hinolophus malayanus Bonhote. (Plate III. fig. 6.) Rhinolophus malayanus Bonhote, Ease. Malayenses, Zool., i. (Oct. 1903) p. 15. Diagnosis. Closely allied to Rh. borneensis, but median anterior nasal swellings somewhat more differentiated. Small: forearm 41,2-42,8 mm. Details. Externally this Bat is exceedingly like Rh. borneensis, but the shape of the anterior nasal swellings is somewhat different. The colour, too, seems to be constantly different. The sella is, in vertical direction, a trifle shorter, but the difference is scarcely appreciable without actual comparison with borneensis. The lateral margins of the sella are, practically, parallel from base to summit; an extremely faint constriction can be traced, at least under a lens; summit of sella rounded. Plagiopatagium inserted on tarsus, or very nearly so. Colour. (1) Biserat specimens; two $ ad.; August and September ; teeth slightly worn ; in alcohol; unfaded.-Upper side a rather dark brown shade of " drab " ; this colour is confined to the tips of the hairs; the much broader base of the hairs so light " ecru-drab" as to approach whitish; under side whitish " ecru-drab," somewhat darker on .the sides of the body. (2) Laos specimen; ad.; teeth slightly worn; skin.--Very much lighter. Upper side blight " cinnamon," base of fur " cream buff'" ; horseshoe patch * on back dark brown ; under side buff. * A dark-coloured patch on the upper side of the body, horseshoe-shaped, or like a V, the branches starting on each shoulder, convexity (or angle-point) directed backwards. It is curiously characteristic of many species of the families Rhino-lophidce and Phyllostomatidee, but often (quite individually) more or less, or even completely, obliterated, especially, of course, when the fur also is dark-coloured. Being, as a rule, more common and more distinct in young or immature individuals, it is, probably, an inheritance from some remote ancestors of the two families. Rhinolophida and Phyllostomatidee have, probably, had a common origin. |
