166 PTEROITS STJBXIGER, 



Mauritius) : Miirchi, Atti Soc. Ital. Sci. Nat. x\. p. 516 (1872-73: 

 structure of hairs) ; Uohsuii, Cat. Chir. B. M. p. 24 (1878: 

 Mauritius) ; Troue.ssarf, Rev. ^ Maff. Zool. (3) vi. p. 204 (1879 : 

 Jrienuion ; Maiuitius) ; Rohin, Ann. Sci. Nat. (6) Zool. xii. Art. 2, 

 p. 4 et seq. pi. ii. tig'. 1, pi. iii. Ho-. 16 (1831 : anatomy) ; Troues- 

 sart, Cat. Mavtm. i. p. 77 (1897: Keuuion ; Mauritius) ; Mntschie, 

 Meyachir. pi. viii. tiifs. 1, 1 «. \a [bis], 1 6, 1 e (bead, teeth) 

 (1899 : >rauritius) ; Elliot, Cat. Mamm. Field Col. Mus. p. 491 

 (1907 : Mauritius) ; Miller, Fain. ^ Gen. Bats, p. 58 (1907). 



Spectrum rubricolle, Gray, Cat. Monk. Src p. 101 (1870: Cape 

 of Good Hope; Mauritius). 



Pteropus (Sericonycteris) rubricollis, Matschic, Megachir. p. 30 

 (1899: Reunion; Mauritius): Trone»sart, Cat. Mamm., Suppl. 

 p. 54(1904: Reunion; Mauritius). 



Pteropus torquatus, G. Fischer, Zoof/nosia, iii. p. 553 (1814). 



Pteropus collaris, Illif/er, Ahh. Akad. Berlin, 1804-11, pp. 78, 84 

 (1815: E. Africau Islands). 



Diar/nosis. — Teeth much smaller, especially narrower, than usual. 

 Ears small, concealed in the fur. Tibia densely clothed above. 

 Fnr of mantle, back, and rump long, scmicrect. Orange bufTy 

 collar contrasting with general dark brownish colour of fur above 

 and below. Size very small : forearm 95-99 mm. Hab. Mas- 

 carenes. 



SJadl. — SfDall, delicately built, with short rostrum. Brain-case 

 high, domed, profile-line of skull from top of brain-case to nasals 

 therefore steeper than in Pt. hypomdanus. Deflection of brain- 

 case greater than usual, the alveolar line if projected backward 

 passing through middle of vertical portion of supraoccipital. The 

 shortness of the rostrum chiefly due to the reduction of the teeth 

 and the comparatively larger ute of the orbits ; front of orbit 

 vertically above back of p'; orbital diameter only slightly less than 

 lachrymal width of rostrum. Sagittal crest undeveloped ; the 

 temporal crests in fully adults closely approximated to each other, 

 but apparently never fused in the median line to form a sagittal 

 crest. Postorbital processes long, slender, reaching about halfway 

 (or a little more) between frontal and zygoma ; corresponding 

 processes on zygoma very small or undeveloped. Coronoid height 

 of mandinh^ much less than length of lower tooth-row, c-ffig. 



Tietli. — Chief character : cheek-teeth small and unusually 

 narrow ; width of p* between one-fourth and one-fifth (in most 

 other species of the genus about one-third) the palatal width 

 between p^-p''. 



Cingulum of upper canines strong, shelf-like, p' minute, terete, 

 spiculiform, decidtioiis : in six almost full-grown individuals it is 

 present in five, lost (and alveolus closed) in one; in two adults 

 ■with unworn teeth present in one, lost in the other. Posterior 

 ledo-es of p^ and p* feebly developed, without postero-external cusp, 

 or with only an indication of such in p'. m^ not quite twice as 

 long as broad, m- nearly equal in size to p,, larger than m,. — 

 i in cross section once and a half or scarcely twice the size of i^. 

 tiiigulum of lower canines M'ell developed, but narrower than in 



