140 Mr. O. Thomas on EinLalloimra. 



From S. Tenasserim to the Kei Islands I do not see 

 any diversity which I should consider of specific value, but 

 three races^ characterized by size^ appear recognizable as 

 subspecies : — 



Firstly, the typical monticola (type-locality, Java), ranging 

 from the Malay Peninsula to Borneo, the smallest of the 

 three, with an upper skull-length (occiput to nasal notch) 

 about ] 28-13 mm., and the maxillary tooth-row about 

 5*0-5*4 mm. Both Miller^s E. peninsularis and Lyon's 

 E. piisilla seem to fall within the range of variation shown by 

 the specimens before me. E.unambe.nsis from the Anambas 

 Is. * I do not know, but an Emballonura from Natuna 

 quite agrees with Javan monticola. 



Secondly, a very large form found in Borneo only, with 

 npper skull-length about 14'5 mm. and maxillary tooth-row 

 6 mm. This is the form taken as representing monticola by 

 Lyon when describing pvsilla, but it far exceeds Javan 

 examples of that species. Detailed measurements of it are 

 given below. 



Finally, an eastern race may be distinguished, E. m. dis- 

 color, Peters, ranging from Luzon, presumably through 

 Celebes, to Amboina, Ceram, and the Kei Islands. It is 

 intermediate in size between the other two, and has the 

 lateral septa of the basial pit rather frequently absent. 



Emballonura monticola rivalis, subsp. n. 



Like true monticola throughout, but size larger. Bases 

 of body-hail s whitish, as usual. 



Dimensions of the type (measured on the spirit-speci- 

 men) : — 



Forearm 48 mm. 



Head and body 44 ; tail 14 ; third finger, metacarpus 43, 

 first phalanx 14; lower leg and hind foot (c. u.) 26-5; 

 calcar 15. 



Skull : occiput to anterior base of canine 15*3 ; occiput 

 to nasal notch 14*5 ; condyle to front of canine 13*8 ; zygo- 

 matic breadth 95 ; facial breadth 6; mastoid breadth 7*7 ; 

 front of canine to back of m^ 6 ; combined length of m^ and 

 m^ 2-5. 



Hub. Borneo. Type from Bida, Sarawak. 



Ttjpe. Adult male in spirit. 13.M. no. 3. 11.2. 2. Col- 

 lected and presented by Cecil J. Brooks, Esq. Three speci- 

 mens, and others collected in Sarawak and N. Borneo by 

 A. Everett. 



* Said to be distinguished by the absence of the usual white bases to 

 the hairs. Size about as in E. »i. discolor. 



