1884.] MR. W. LECHE ON CHIROPTERA 1 ROM AUSTRALIA. 49 



2. On some Species of Chiroptera from Australia. 

 By W. Leche, University of Stockholm. 



[Received December 17, 1883.] 



Through Mr. G. Schneider, of Basel, I have received a collection 

 of Australian Bats in alcohol, on some of which I beg leave to offer 

 a few remarks. 



1. Nyctinomvjs petersi, sp. nov. 



Of hitherto described species this stands nearest toiV. norfolcensis, 

 Gray. It differs from it slightly, however, through the following 

 characteristics: — (1) Gular sac entirely wanting in both the male 

 and female, while it exists in N. norfolcensis. (2) Nostrils opening 

 forward : in N. norfolcensis sublaterally. (3) The wing-membrane 

 is attached to the tibia a short distance from the ankle ; in N. nor- 

 folcensis it issues from the ankle. (4) The innerside of the first 

 lower premolar is not covered by the cingulum of the second pre- 



Nyctinomiis petersi, § . 

 a, skull, twice the natural size ; b, lower dentition in front, natural size. 



molar as in N. norfolcensis. (.0) It has only four deeply bifid incisors 

 in the lower jaw, while N. norfolcensis is said to have in addition a 

 third outer pair of very small lower incisors ; but perhaps this 

 difference is only individual, or dependent upon age. 



The tragus, antitragus, the relative length of the metacarpal bones, 

 and other important characteristics agree completely with those of 

 Nyct. norfolcensis. 



The cranium is distinguishable, in comparison with that of Nyct. 

 hrasiliensis, by its sharply depressed flattened form as well as by 



Skull of N. hrasiliensis, rf, twice the natural size. 



the fact that the upper profile-contour is entirely straight. The 

 crista occipitalis forms the highest point of the cranium ; in Nyct. 

 hrasiliensis the crown of the head rises higher. The ventral edge 

 of the upper jaw is almost straight, while in Nyct. hrasiliensis it is 

 strongly turned upward in front. 



Proc. Zool. Soc— 1884, No. IV. 4 



