34 On some new African Bats. 
first phalanx 8, second phalanx 4:7; lower leg 17; hind 
foot (s. u.) 7°7. 
Skull: greatest length 14:2; basipalatal length 11; zygo- 
matic breadth 9:4; posterior breadth 9; breadth between 
orbits 6°4; constriction 4:4; length of palate 5; breadth 
between outer borders of m.* 6:2; front of canine to back of 
m.” 5°1. 
Hab. St. Michael’s, Azores. 
Type. Male. B.M. no. 65.10. 2.1. Collected and pre- 
sented by F. DuCane Godman, Esq. One specimen only. 
The single specimen has all its claws, both of feet and 
thumb, worn down quite blunt. Whether this is accidental 
or due to the nature of its habitat remains to be seen. 
From the gigantic P. maximus and lasiopterus, through 
P. noctula, stenopterus, and Leislert, there is a regular grada- 
tion in size down to this small Azorean representative of the 
group, all of them differing from each other in little else but 
size and the correlated development of the cranial ridges. 
I accept with some hesitation the generic separation of the 
noctula group from Pipistrellus, advocated by Gray, Jerdon, 
H. Allen, Miller, and Méhely, on the ground that not only 
is the general build of the body different, but that the wings 
even are different in shape, owing to the reduction in length 
of the fifth digit. At the same time it must be admitted that 
some of the Indian species of Pipistrellus, such as P. ceylonicus, 
chrysothriz, mordax, &c., approximate to a certain extent to 
Pterygistes, and render the distinction less marked than it 
appears to naturalists who have only compared with each 
other such extreme forms as Pterygistes noctula and Pipi- 
strellus pipistrellus. 
Pipistrellus Kuhlit fuscatus, subsp. n. 
Similar in all essential respects, in size, proportions, shape 
of ears and tragus, and in dentition, to the true P. Kuhliz, but 
distinguished by its uniform dark colour. The body is dark 
smoky brown above and scarcely lighter below, and the ears 
and volar membranes are uniformly dark slaty grey, without 
trace of the white edging so characteristic of P. Kuhlit. 
Dimensions of the type (an adult male in spirit) :— 
Forearm 35 millim. : 
Head and body 45; tail 34; ear 12°5; tragus on inner 
edge 4; third finger, metacarpal 32, first phalanx 12, second 
phalanx 10; lower leg 14:5. 
Hab. Naivasha, British East Africa. 
Type. Male. Collected 19th October, 1900, and presented 
by Sir H. H. Johnston. 
