504: Mr. K. Andersen on IlipposiJerus diad 



lauema 



rather dark ''Front's brown/' No patches; longitudinal 

 stripe but very slightly indicated. 



H. eiiotis. — Essentially as H. d. vicarius. 



I have seen no skin of //. dinops. 



Synopsis of the Species 



Anieoibltal ^vidth 80-IO; ears moderate : width 2i-21-o. 

 Upper teeth 11'3-13'2; upper border of posterior leaf 



forming an arc of a circle : Indo-Austro-Malayan 



Subregions. exclusive of Batchian diadema. 



Upper teeth 14-14*7 ; upper border of posterior leaf 



trilobate : Ceylon kmkadiva. 



Anteorbital ^-idth 10-3-11 ; ears large : width 29-32 5. 

 Upper teeth 13-2-1 3-7; forearm 84-5-89-2; lower leg 



36-8-37 : Batchian euofis. 



Upper teeth 146 ; forearm 96; lower leg 44 : Solomons, dinops. 



General Remarks. 



Common characters. — All the bats reviewed above have 

 been called ^ diadmia. They have the following characters 

 in common : — 



Nasal swellings always distinctly inflated, the upper surface 

 of the facial portion of the skull never quite flattened^ as in 

 H. arrniger and its allies, p^ (of course) and p^ completely 

 wanting. The cingula of p.2 and p^ strongly in contact, 

 rather often a little overlapping each other, very rarely (in 

 two oat of 33 skulls) separated by an extremely narrow 

 interspace; the tendency to overlapping, and the rarity of 

 the exceptions to the general rule, may be taken as evidences 

 that /?3 has been lost for many generations of ancestors 

 (compare the pronounced vacillation in this respect in those 

 highly-developed species of Rhinolophus which have lost/jg). 

 p^ very small, and, with rare individual exceptions f, situated 

 in the outer angle formed by the canine and 7/, i. e. on the way 

 towards complete ol literation. The upper canine and p*, as a 

 general rule, very distinctly separated; quite often, however, 

 the interspace is small or extremely small ; very rarely the 

 cingula are completely in contact |. p^ somewhat reduced 

 in size. 



* On H. Mas'tni and 7iicobarensis, see the " General Remarks," below. 



t In one skull, out of 33, p'^ is almost quite in row ; the exception is a 

 H. d. vicarius from Sumatra. 



X The details, from an examination of 33 skulls, are these : — In 16 

 c and ;>" are rather widely separated ; in 14 slightly or very slightly ; in 

 one almost in contact (pidlatus) ; in one in contact on the one side 

 (griseiis) ; in one in contact on either side (dinops). The variation is 

 quite individual, the extreme?, or approximately the extremes, rather 

 often occurring in individuals of the same subspecies (griseus. f. i.). 



