(179) 



NEW oli LITTLE-KNOWN BATS 



7 



The specimen from Assab agrees in every respect with the 

 type of Rh. acrotis, from Keren. 



3 b. Rlxiuoloplius acrolis V>i-;i<? li v«j;n;» < li us - K. And. 



1902. Rhinolophus antinorii (non Dobson), Anderson & de Winton, 

 Zoology of Egypt, Mainm , p. 96, pi. XVI. fig. 2. 



1905. Rhinolophus acrotis hrachygnathus , Knud Anderson, Ann. & Mag. 

 Nat. Hist, (7) XV. p. 73 (Jan. 2, 1905). 



cf ad., in alcohol. Korosko, Upper Egypt. Collected by Messedaglia Bey. 



Presented to the British Museum by Marquis Doria (no. 5. 12. 15. 3). 

 c? ad., in alcohol. Cairo. Collected by Panceri and Gasco. Museo Civico, 



Genoa. 



3 c? ad.; in alcohol. Province of Giza, Lower Egypt. From the collections 

 of Dr. J. Anderson and Capt. S. S. Flower. British Museum (nos. 

 92. 9. 9. 7 (type of hrachygnathus) , 5. 8. 8. 4-5). 



Q irara.; skin. Giza, Lower Egypt. Collected by A. L. Butler, Esq. British 

 Museum (no. 4. 7. 8. 1). 



Rh. acrotis hrachygnathus was hitherto known only from 

 the Province of Giza, Lower Egypt, The example from Korosko 

 presented to the British Museum by Marquis Doria, is of special 

 interest as showing the range of this form to extend up the Nile 

 Valley almost as far as the Nubian frontier. 



The geographical races of Rh. acrotis. — Rli. acrotis 

 hrachygnathus differs from the typical form of the species in the 

 following particulars : — 



The skull is distinctly slenderer; the nasal swellings narrower. 

 The teeth are slightly smaller, and, in conformance with this, the 

 mandible shorter, the maxillary width (across the antero-external 

 corners of m 3 ) smaller. The horse-shoe and sella seem to average 

 a little narrower. — Up to the moment of writing this I have 

 not seen any example intermediate between hrachygnathus and 

 the typical acrotis. 



Rh. acrotis typicus is an inhabitant of Erythrea , Rh. a. 

 hrachygnathus of the Nile Valley, from Korosko to Cairo. 



Rh. acrotis andersoni ('), from the Eastern Egyptian Desert 



(') Rhinolophus ancUrsoni, Oldfleld Thomas, Ann. & Mag. Nat. Hist, u) XIV. p. 

 150 (Aug. i, 1904). — Rhinolophus acrotis andersoni, Knud Andersen, t. <'. p. 451 (Dec. 

 1. 1004); id., op. cil. (7) XV. p. 73 (.lan. 2, 1905); id., op. cit. (7) XVI. p. 649 (Dee. 1, 1905). 



