7 
This is no doubt the form of MM. ursulus which inhabits the 
forest-region to the west of the Tocantins River, while 
the Parad area to the east of that river is the locality of the 
true ursulus. 
Hoffmannsegg was said to have received his original 
specimens from near the mouth of the Tocantins, a statement 
which might give rise to confusion. But it appears that 
the word Tocantins is equally applied to the broad estuary 
which runs north-eastwards past Parad and the narrower 
river which runs northwards, nearly at right angles to the 
other, separating the district in which Cametd stands from 
the true Pardé region. The latter is the home of uwrsulus, the 
former that of wumbratus. 
266 Generic Classification of the Taphozous Group. 
XXXII.—The Generic Classijication of the Taphozous Group. 
By OLDFIELD ‘THOMAS. 
(Published by permission of the Trustees of the British Museum.) 
WHEN, in 1915, I wrote my ‘“ Notes on Yaphozous and 
Saccolaimus ” *, and recognized the latter as a distinct genus 
from the former, as had Hollister previously under another 
name, I did not sufficiently weigh the characters which 
separate Zaphozous nudiventris and its allies from the typical 
members ot Taphozous. 
On reconsidering the subject, I now think that these 
remarkable half-naked bats should be separated as a distinct 
genus from the ordinary hairy species, and would suggest 
that the whole group might be synoptically arranged as 
follows :— 
A. Bulle imperfect, the inner side of each 
incomplete. A radio-metacarpal pouch. 
a, Frontal concave ; upper profile of brain- 
case rising from it in a strong curve. 
Occipital “helmet” scarcely deve- 
loped. Body haired as usual. ...... I. Taphozous, Geoff. 
Genotype: 7. perforatus, Geof. 
b. Frontal almost flat, the cranial profile 
scarcely rising above it behind. A 
strongly developed occipital helmet. 
* J, Bombay Soc. xxiy. p. 57 (1915). 
