2. PTEE0PU8. 69 



Pteropua pyrrocephalus, Meym, Nov. Act. Soc. Cces. Leap.- Car. Nat. 



Cur. XVI. p. 604. 

 Acerodon jubatus, Jourdan, F. Cuvier, Ann. des Sci. Nat.vin. p. 376. 



Ears shorter than in Pt. medius, triangular in upper third, ex- 

 tremities narrowly rounded off or subacute; upper third of the 

 outer margin of the ear-conch flattened. 



Interfemoral nearly 1 inch wide in the centre, not concealed by 

 the fur ; wings less than 1 inch apart at their origin from the sides 

 of the back, but the fur, though very short, occupies a space nearly 

 3 inches wide ui this position ; legs naked, or with a few scattered 

 hairs only. 



Face dark brown or black ; on the crown of the head varying 

 from pale golden yellow to bright sUvery greyish with a yellowish 

 tinge passing into the reddish yellow of the neck ; in advdt males 

 the red collar extends round the under surface of the neck, in 

 females it ends on the sides of the neck, or there is a slight tinge 

 only of red in the dark fur of the throat and neck beneath ; back 

 dark reddish brown, the extremities of the hairs slightly grizzled, 

 especially posteriorly; breast and abdomen deep reddish brown, 

 intermixed with greyish hairs. 



Upper incisors conical ; the central incisors close together, and 

 separated from the outer incisors on each side by a small space ; 

 first upper premolar closer to the canine than to the second pre- 

 molar in the young, deciduous in adults ; third upper premolar and 

 first molar with prominent antero-internal basa Jcusps (Plate IV. 

 fig. 6) ; last upper molar about one third the size of the antepenul- 

 timate molar ; outer lower incisors more than double the size of the 

 inner incisors, which are bifid ; first lower premolar about the size 

 of the last molar, in the centre of the space between the canine and 

 second premolar. 



Length, head and body 10", head 3""3, ear l"-25, eye to tip of 

 nostril l"-2, forearm 7"-2,' thumb 3"-2, third finger 14"-5, fifth 

 finger 9"'2, tibia 3"-3, foot 2"'l, calcaneum 1", interfemoral mem- 

 brane in the centre 0""7. 



Hab. Philippine Islands. 



This species probably occupies the next place to Pt, edidis in 

 point of size. Erom Pt. edulis, and from other species externally 

 similar, it is at once distinguished by its very peculiar teetb, which 

 are better developed than in any other species of the genus ; the 

 third upper premolar and the first molar have distinct antero- 

 internal cusps, the presence of which led M. Jourdan to constitute 

 it the type of a genus Acerodon. Antero-internal cusps also occur 

 in the corresponding teeth of Pt. heraudrenii, Pt. macHotii, and Pt. 

 molossinus (see description of teeth of these species) ; but none of 

 these species approach Pt. jubatus in size, and in none is this antero- 

 internal cusp so much developed. 



The following are the measurements of a skull of an adult male 

 of this species in the collection, and also those of skulls of the types 

 of Pt. macHotii, Temminck, and Pt. celebensis, Peters, in the collec- 

 tion of the Leyden Museum :— 



