of the Rhinolophus arciiatus Oroup. 283 



Mental grooves. — No species passes beyond the primitive 

 stage : three mental grooves. 



Wing-structure [covd'^axe the wing-indices below^ on p. 287). 

 — It is a general rule in the genus Rhinolophus that in the 

 most primitive species the fourth and fifth metacarpals are 

 equal in length, or, if anything, the fifth a trifle shorter, and 

 III.^ less than 1^ the length of III}. All the members of the 

 Rh. arcuatus group exhibit the slightly more advanced stage 

 in which the fifth metacarpal is a little kmger than the 

 fourth, and III.^ more than 1^ the length of III.^ 



Tail. — The tail is extremely short, on an average but f 

 the length of the lower lear. 



Rhinolophus arcuatus exiguus, subsp. n. 



Diagnosis. — Similar to the typical Rh. arcuatus (from 

 Luzon), but with narrower horseshoe and nasal swellings. 

 Forearm 4J)-8-46"2 mm. 



Skull. — General characters as described above (pp. 281- 

 282) . Width of nasal swellings 5-52 mm., in typical arcuatus 

 5'6-5*7 mm. 



Dentition (thi'ee skulls). — p^ external (one skull, teeth 

 unworn), or quite wanting on one side (one, teeth slightly 

 worn), or on both sides (one, teeth slightly worn), p^, and 

 Pi strongly in contact, their cingula overlapping each other. 



External characters. — All essential points as in the typical 

 form, but horseshoe decidedly narrower (7*7-8'2 mm., as 

 against 9-10 mm.), Plagiopatagium inserted l-2'5 mm. 

 above the ankle. Colour (of spirit-specimens) a shade of 

 dark brown, as in the dark phase of arcuatus typicus. 



Type. — ? ad. (in alcohol). Zamboanga. Collected by 

 A. Everett, Esq. Brit. Mus. no. 79. 5. 3. 13. 



Range. — Zamboanga. Guimaras. 



Rhinolophus subrufus, sp. n. 



Diagnosis. — Like Rh. arcuatus, but much larger. Forearm 

 53-8-57 mm. 



Skull. — As compared with Rh. arcuatus premolars and 

 molars comparatively larger ; temporal fossa wider, making 

 the zygomatic width decidedly larger than the mastoid 

 width ; sagittal crest somewhat higher in front. 



Dentition (four skulls). — p^ external; jOj and p^^ in contact 

 or slightly separated. 



19* 



