058 CHIEONAI. 



2:3. CEIRONAX 



Cynopterus (pt.), Dobsou, Cat. Chir. li. M. p, 80. 



Type : Ch. melanocephalus. 



rteropus (pt.), Temminck, Mon, Matnm. i. p. 166 (1825: geuus 

 Ptefopiis, part of tirst section, p. 172) ; Desmarest, Diet. 8ci. 

 Nat. xlvi. p. 358 (1827 : genus I'teropus, part of tirst section, 

 " lioussettes sans queue ") ; J. B. Fisc/wr, St/». Miimm. p. 87 

 (1829 : genus Iteroj^'is, part of section tt, " Pachysomata "). 



Pachysoma (pt., vec E. Geoff.), Is. Gcofroy, Diet. Class. d'Hist. 

 Nut. xiv. p. 703 (Sept. 1828: =Ctjno2)terus-\-Chironax); id., 

 Ann.Sci. iV«f. xv. pp. 192, 203 ("Oct. 1828": =Cynoptenis-[- 

 Chii-ona.v) ; Lesson, Hist. Nat. Mamm. {Comjjl. Buffon), v. p. 61 

 (1836: =Cynopterus-\-Chironax) ; Tevimiiick, Mo7i. Mamm. ii. 

 pp. 50,91 (1837: =^Cynopterus-\-Meg<erops-\-Chiro>uix)\ Wagner, 

 iSchreber's Sduy., Suppl. i. p. 362 (1839: subg. of Pterojms — 

 Cynopterus-\-Mey(e?-ops+Chironax) ; Lesson, N. 2'abl. R. An., 

 Mamm. p. 14, n. 44 (1842 : = Cynoptervs+ Chironax) ; ll'ayner, 

 Schj-eber's Sduy., Suppl. y. p. 605 (1853-55 : subg. of Fteropus 

 = L!pumophorus-\- Cynopterus-\- Chironax). 



CvEopterus (pt., nee F. Cuv.), Gray, May. Zool. Sf Bot. ii. p. 503 

 '(1838: =Cynopterus+C/nro7iax) ; Peters, MB. Ak. Berlin, 1865, 

 p. 256 ; Gray, P. Z. S. 1866, p. 64 ; Peters, MB. Ak. Berlin, 

 1867, p. 866 (= Cynopterus-\- Chirona.v) ; Dobson, Mon. As. Chir. 

 pp. 14, 23 (genus), pp. 23, 24 {snhg.— Cynopterus+ Chironax) 

 (1876) ; id., Cat. Chir. B. M. p. 80 (genus), p. 61 (subg.= Cywo- 

 pterits-\-Chironax-\-21wopterns) (1878); Miller, Fam. S)- Gen. 

 Bats, p. 47 (1907 : = Cynopterus -^i.+ Chirona.v). 



Megjeropa (pt., nee Temm.), Trouessart, Cat. Mamm. i. p. 86 

 (1897 : subg. of Cynopterus = Megcerops + Chironax + Balio- 

 nycteris). 



Thoopterus (pt.), Malfchie, Megachir. pp. 72, 77 (1899 : subg. of 

 Cynopterus = Thoopterus-\- Chironax-\-Sphcerias). 



Differential characters. — Similar to Balionycteris, but premaxillse 

 solidly united anteiiorly, incisors ^-^, i- subequal to i\ cheek- 

 teeth \, p' with a well-defined antero-external basal cusp. AVings 

 not spotted. Size very small, forearm about 43-45 mm. [One 

 species. Hah. Java.] 



;Sl-uU. — Similar in all respects to that of Balionycteris, except 



in having the premaxillte completely fused anteriorly, and the 



maxillary tooth-ro^v not extending beyond the ventral margin of 



the orbit. Postorbital foramina absent ; foramen rotundum and 



ovale .separated. 



i^ i"^ c p^ p^ p* m^ 



Dentition. — — i— ?— ^ x2 = 30 (as in Cynopterus). 



1-. 1. c p, P3 p, m, m, ^ 



Dentition differing from that 01 Balionycteris as follows : — 



(1) Incisors above and below normal in number (ij present) and size 



(i= not shortened) ; (2) 4-4, not 5-5, upper cheek-teeth (the minute 



* Xfipwi'fr?, one who is uiiister of his hniids (tivat. tiJjv xefiiZv). 



