1905.] OF THE GENUS RHINOLt)PHUS. 87 



is the true reason of the exceedingly confused state in which this 

 group of Bats has remained, making a safe determination of 

 specimens procured ahiiost impossible. 



Geograjihiccd races. There seems to be two forms of Rh. hor- 

 neensis, differing, slightly, in the size of the ears, and in geogra- 

 phical habitat. 



6 a. Rhinolophus boeneensis Peters, typicus. 



Ehinolophtis Borneensis Peters, MB. Akad. Berlin. June 25th, 

 1861, p. 709. 



Rhinolojjhus minor (partim, nee Horsf.), Peters, MB. Akad. 

 Berlin, 1871, p. 306 ; Dobson, Cat. Cliir. Brit. Mus. (1878) p. 114. 



Rhinolo2ihus afjinis (partim, nee Horsf.), Dobson. op. cit. (1878) 

 p. 112. 



Diagnosis. Ears slightly shorter: 16-17 mm., and narrower: 

 12-2-1 2-8 mm. Forearm 41 ■2-43-7 mm. 



Details. In one specimen (from Banguey Isl.) the summit of 

 the sella is completely square-cut ; in the others (Labuan, N,W. 

 Borneo) it is broadly rounded off. This is, no doubt, an individual 

 variation, but, it would seem, of more frequent occurrence in indi- 

 viduals inhabiting smaller islands (cf. Rh. megaphyllus monachus., 

 Rh. nanus, Rh. truncatus, Rh. borneensis spadix). 



Measurements. On p. 88. 



Distribution. N.W. Boi-neo ; Labuan ; Banguey. 



6 b. Rhinolophus borneensis spadix Miller. 



Rhinolophi{,s afftnis roicxi (non Temm.) Thomas. N^ov. Zool. i. 

 (1894) p. 656. 



Rhinoloj)hus spadix Gerrit S. Miller, Jr., Proc. Wash. Ac. 

 Sci. iii. (March 26th, 1901) p. 136. 



Diagnosis. Ears slightly longer: 17-19*5 mm., and broader: 

 12-5-14-2 mm. Forearm 42-5-46-3 mm. 



Details. In one specimen (Sirhassen Isl.) the summit of the 

 sella is completely square-cut ; in all the others (one of them from 

 the same island) it is broadly rounded off. 



3Ieasicrements. On p. 88. 



Distribtition. S. jSTatunas (Sirhassen) ; Karimata Gi-oup (Kari- 

 mata and Pulo Sarutu). 



Technical 7iam.e. The type of " Rh. spadix," in the Washington 

 Museum, is from Sii^iassen. There is a specimen from the same 

 island in the British Museum. I am indebted to Mr, Miller for 

 the loan of a paratype, also from Sirhassen, and of the series from 

 the Karimata Group, collected by Dr. Abbott. 



Remarks. I should not have separated these two forms (if they 

 be so) of borneensis, if the latter of them had not, accidentally *, 

 got a name. There is no tangible difference in the skulls, not even 



* When describing Bh. spadix as a new species, Mr. Miller compared it with 

 BJi. (iffinis. He could not, very well, compare it with B7i. borneensis, which was 

 rea;ar(led as identical with BJi. minor. 



