2. PTEROPTJS. 47 



The wings arise close together from the sides of the back, and the 

 fur along the back is scarcely more than an inch in width at its widest 

 part. 



The canine and second iipper premolar are separated by a narrow 

 space, also in the lower jaw, where the first premolar nearly fills up 

 the space between. 



In the following Table the measurements of the above-described 

 specimen are placed in the first column ; in the second those of Pt. 

 melanopogoii from Bouru Island ; in the third those of Pt. melano- 

 pogon, var. aruensis ; while in the fourth the few measurements of 

 Pt. degener given by Dr. Peters are exhibited : — 



I. II. TIL IV. 



Length of head 3'7 ... ... 37 



ear 10 10 10 087 



forearm 7-0 7-75 7-3 77 



,, second finger 5(5 U'5 5'45 



,, third finger, metacarp 4'7.5 .5-2 5'1 



Istph 3-65 3-8 3-6 



2nd ph 5-6 6-3 5-5 



fifth finger, metacarp 4-9 5-25 5-2 



Istph 2-4 2-5 2-25 



2ndph 2-1 24 2-0 



tibia 3-3 33 ... 3-4 



„ calcanenm I'l -.■ ... I'l 



foot 2-4 ... ... 2-4 



a-d. d & ? imm. et ad. sks. Duke of York Island. Rev. G. Brown [C.]. 



24. Pteropus chrysoproctus. 



Pteropus chrysoproctus, Temminck, Monogr. Mammal, ii. p. 67 



(1835-41); Peters, MB. Akad. Berl. 1867, p. 331. 

 Pteropus argentatus, Gray, Voij. 'Sulphur,' Mammalia, p. 30 (1844). 



Ears longer than the muzzle ; general shape as in Pt. medius, 

 rather broader in the upper third and more abruptly narrowed and 

 subacutely pointed. Wings close together at origin from the sides 

 of the back, scarcely half an inch apart. Interfemoral membrane 

 short, but its free margin in the centre is not concealed by the fur. 



The whole body, except half the back, is covered with bright 

 reddish-yeUow fur^ which is darker under the chin and on the chest 

 and abdomen ; anterior half of the back reddish brown. In the 

 type of Pt. argentatus. Gray (a not fuU-grown male), the back is 

 darker brown, with a few intermixed yellowish hairs. 



Although the wings are so close together at their origin, the fur 

 covering the middle of the back is nearly two inches in width and 

 rather long. 



Teeth as in Pt. medius, which this species also closely resembles 

 in the form of the skull. 



Length (of the type specimen), head and body about 9", ear l"-2, 

 eye from tip of nostril 0"-8, forearm 6"-5, thumb 3"-l ; third finger— 

 metacarp. 4"-5, 1st ph. 3"-6, 2nd ph. 5"-4 ; fifth finger— metacarp. 

 4"-8 1st ph. 2"-l, 2nd ph. 2" ; tibia 2"-9, foot l"-8. 



