1905.] OF THE GENUS RHIXOLOPHUS. 89 



Skull. As in horneensis, 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), pg half in row (one skull), or external 

 (the other), p^ and p^ in the former skvill, of course, separated ; 

 in the latter almost in contact, p" in the tooth-row. Upper 

 canine and p^ widely sepai-ated. 



Type. 2 ad. (in alcohol). S. Camarinas, Luzon, Philippine 

 Islands. Collected by L. M. McCormick, Esq. Un. St. Nat. Mus. 

 no. 101966. 



Remarhs. 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 confvTsion with the equally small species of the minor 

 group, to which it, in other respects, bears a very striking 

 external resemblance. 



8. Rhinolophus malayanus Bonhote. (Plate III. fig. 6.) 



Rhinolophus malayanus Bonhote, Fasc. Malayenses, Zool., i. 

 (Oct. 1903) p. 15. 



Diagnosis. Closely allied to Rh. horneensis, but median anterior 

 nasal swellings somewhat more difierentiated. Small : forearm 

 41-2-42-8 mm. 



Details. Externally this Bat is exceedingly like Rh. borneensis, 

 bvit the shape of the anterior nasal swellings is somewhat different. 

 The colour, too, seems to be constatitly 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 ; svimmit of sella rounded, 

 Plagiopatagium inserted on tarsus, or very nearly so. 



Colour. (1) Biserat specimens; two 5 ad.; August and Sep- 

 tember ; 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 bright " cinnamon," base of fur 

 "cream buff"" ; hoi"seshoe patch* on back dark brown; under side 

 buff. 



* A davk-colowred patch on the upper side of tlie body, horseshoe-sliaped, or like 

 a V, tlie branches starting on each shoulder, convexity (or angle-point) directed 

 backwards. It is curiously characteristic of many species of the families Bhino- 

 lopkidcB and Phi/llostomatidcB, 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. 

 RMnolophidce and Phyllostomatidce have, probably, had a common origin. 



