Descriptions of East Asiatic Mammals in 
The species is represented regionally as follows : H. armiger 
armiger in Nepal and Tonkin, H. a. pendleburyi in peninsular 
Siam, H. a. delibis in the Malay Peninsula,.//, a. swinhoei in 
Fukien, H. a. terasensis in Formosa, and H. a. turpis in the 
Luchu Islands (a small-sized race). 
The Diadem-bearing Bat, H. diadema^ is so named from a 
fancied resemblance of the posterior noseleaf to a crown. These 
Bats, which, with the length of the forearm about 3% inches, 
are about as large as pratti and armiger, reach only the southern 
portions of tropical Asia. There are three or four lateral leaflets 
on the face on either side of the horseshoe. No frontal gland is 
present on the forehead, although this structure is present in the 
galeritus, pratti, armiger, and speoris groups. The red color 
phase is apparently never developed in H. diadema, although the 
closely related H. lankadiva of India and Ceylon is reddish. The 
color instead is gray or brownish gray with white marks on the 
face and the sides of the back. The headquarters of diadema, 
like the much smaller calcaratus and bicolor, is the Indo-Aus- 
tralian Archipelago. Only two races enter our territory : H. d. 
nobilis in the lower Malay Peninsula and H. d. masoni from 
southern Burma east through Siam to Annam. 
The Trident Horseshoe Bats, genus Aselliscus, are very 
tiny species, differing from all of the foregoing groups of Hip- 
posideros by having the upper edge of the posterior noseleaf 
divided into three distinct points. There is no frontal sac on 
the forehead. The rather long tail extends a short way beyond 
the membrane. 
The typical species, A. tricuspidatus, is an island form not 
known in our area. Three others; stoliczkanus from Penang 
Island, trifida from Burma, and wheeleri from northern Burma, 
which possess very similar characteristics of the noseleaf, are 
here referred to Aselliscus. Formerly they were placed either in 
Hipposideros, Trioenops, or Asellia. The last two genera, Afri- 
can and Arabian, are markedly unlike these little Malayan Bats. 
