of (/w ll\i'\no\oi)\in>i j)Iiili])piueiisis Group. 219 



oflfslioot of the sedulus-type, dUfi^viu^ i\i all important ci'anial 

 characters from the species of the tri/'oliatas section. But 

 exterually it is exceedingly like a small Rh. perniger. 



3. Rhinolophus trifoliatus, Temm. 



Diagnosis. — Cranial and external characters : the trifoliatus- 

 type (above pp. 245-47). Forearm 47-55 mm. 



^hvll. — As described and figured above (p. 245). 



Dentition (eleven skulls). — p^^ '■'vacillating^'' in position: 

 in row (one skull), or almost in row (one), or half in row 

 (two) J or almost external (one), or quite external (six). 

 Corresponding to this, p.^ and p^ well separated (five), or 

 almost in contact (one), or quite in contact (five), p- always 

 in row. Upper canine and p^ well separated. In one 

 example there is a. marked interspace between p'^ and p^ (the 

 former place oi p^, lost in all recent species of the genus). 



Colour. — Five skins ; ad. ; teeth unworn or slightly worn : 

 Very light-coloured. Upperside, a " wood-brown " shade 

 of "drab," somewhat darker on the hinder back; base of 

 hairs more distinctly light '^ drab." Underside '' drab," 

 somewhat varying in the intensity of the colour, and washed 

 with "^ ecru-drab " on the throat and breast. Interfemoral, 

 between the tip of the tail and the calcar, narrowly 

 bordered with yellow. 



Size. — The great variation in the size of this species 

 (forearm 47-55 mm.) is independent of the geographical 

 habitat and of the sex : — (1) The shape of the skull is 

 identically the same in all the individuals examined ; (2) the 

 size of the skull is much less subject to variation than the 

 external dimensions (c/, the measurements) ; (3) the smallest 

 and the largest individuals examined are both from 

 N.Borneo; (4) the smallest individual in the series (fore- 

 arm 47 mm., teeth slightly worn) and one of the very 

 largest (54'3 mm., teeth unworn) are, both of them, males. 

 All the specimens are full-grown (distal epiphyses of meta- 

 carpals aukylosed). 



Distribution, — N. Borneo (Paitan, Kina Balu, Mt. Dulit, 

 Mt. Mulu, Sarawak); Singapore; Lower Siam (Trong) ; 

 Tenasserim (Mergui). ? Java [of. below). 



Technical name. — The type specimen of Rh. trifoliatus, as 

 described by Temminck ^, is stated to be from Bantam, 

 AY. Java. I have seen no specimen of this Bat from Java. 

 It is rather easy indeed to point out some discrepancies 

 between Temminck's figure (natural size) and the scries 



* Teiuiniuclc, Mon. Mamm. ii. S'' monogr. (183->) pp. 27-28, pi. xxxi. 

 Ann. cC' Mag. X. Hist. Ser. 7. Vol. xvi. 17 



