BALIONVCTERIS. 



can be no doubt that Dyacopterus is as fully entitled to stand as a 

 distinct genus as any of the other Cynopteriue genera admitted by 

 modern systematists, and, for the present at least, it would seem 

 to find its proper place in the vicinity of those ^enara, (Cynopterus, 

 Ptenochirus, Alegcerops) in which the postorbital foramina are pre- 

 sent and well-developed. 



1. Dyacopterus spadiceus, Thos. 



Cvnopterus spadiceus, TJunnas, Arm. Sf Maq. N. H. (Q) v. p. 235 

 "(1 March, 1890: Baram) ; id., P. Z. 6'. 1892, p. 227; Everett, 



P. Z. S. 1893, p. 494 ; Hose, Mnmm. Somen, p. 38 (1893). 

 Balionycteris maculata (pt., nee TJws.), Matschie, MeqacJiir. p. 80 



(1899) ; Trouessart, Cat. Mamm., Supj}!.. p. 63, n. 550 (1904). 

 Tboopterus spadiceus, Milkr, Fam. Sf Gen. Bats, p. 50 (1907). 



Fur. — Shorter and more closely adpresscd than in any other 

 Cynopterine bat ; length of hairs of back and belly about 2-3 mm. ; 

 tibia naked above; foreneck (at least in females) so thinly clothed 

 as to appear semi-naked. 



Colour (type). — Back between Prout's brown and vandyck- 

 brown ; crown similar, but rather darker; nape of neck much 

 lightened with pale silvery hairs. Foreneck and centre of breast 

 and bellj' pale silvery, gradually darkening on sides of breast and 

 belly and on flanks to brownish drab. Neck-tufts (female) clay, 

 not strongly contrasting with surrounding colour of neck. Meta- 

 carpals and phalanges (dried) brown, membranes unmarked. 



Measurements. On pp. 675, 677, 679. 



Specimen examined. The type, in collection, is the only specimen 

 on record. 



Panqe. Borneo ; so far known only from Baram, Sarawak. 



a. 2 ad. sk. ; skull. Baram, Surawiik. Dr. Cli. Hose [C.]. 90.1.28.4. 



( Ti/jx ot" species.) 



22. BALIONYCTERIS, Matschie. 



Type. 

 1899. Balionycteri.s, Matschie, Megacfiir. pp. 72, 80 ... . B. maculata. 



Cvnopterus (pt., 7iec F. Cut:), Thomas, Ann. Sf Mag. N. II. (G) si. 



'p. 341 (1893). 

 Megajrops (pt., 7iec Pet.), Trouessart, Cat. Mamm. i. p. 86 (1897 : 



subg. of Cynoptenis= M€f/<erops-\- Chirona.t -^ Balionycteris). 

 Baliouycteris, Matschie, I. s. c. (pt.) (1899; ; Miller, Fam. ^- Gen. 



Bats, p. 52 (1907 : characters). 



Diagnosis. — Cyno])terine group. No trace of postorbital fora- 

 mina ; incisors j-^ (ij absent), i'^ much shorter than i\ upper 

 canine with deep vertical groove, cheek-teeth ^ (a minute m- 

 present), p' with large antero-external basal lobe, m', m^, and m^ 

 conspicuously reduced in size. No tail ; wing:5 much longer than 



