1 44 Mr. O. Thomas on some Specimens of 



X. — On some Specimens o/" G!auconycteris//'Ow the 

 Cameroons. By OldFIELD Thomas. 



(Published by permission of the Trustees of the British Museum.) 



Among some mammals from the Cameroons sent for deter- 

 mination by Prof. E. Lam])e, of the Wiesbaden Museum, 

 there occur tliree examples of GJauconycten's, representinop 

 three different species, one being new and the others of 

 sufficient interest to deserve some notice. 



Specimens of this genus are somewhat rare in collections, 

 and any addition to our knowledge of them is very welcome. 



The type of the new species and a selection of specimens 

 of the other mammals represented (including Groei.dura doli- 

 chura, Pi-ters) have been generously ceded to the British 

 Museum by the authorities at Wiesbaden. 



1. Olauconycteris argentatus, Dobs. 



S . No. 23. Bibundi. 



This fine species is distinguished from G. variegatus and 

 papilw by its bicuspid * inner incisors and less conspicuously 

 marbled wings and interfemoral, in which, however, the 

 ordinary venations are particularly well marked. In colour 

 fresh skins show that the ends of the hairs are not grey, as 

 Dobson (describing from a spirit-specimen) stated, but pale 

 cinnamon or clay-colour. 



The species ranges eastwards into British East Africa, 

 where three specimens were obtained during the Rudd Explo- 

 ration by Mr. R, Kemp. Mr. Bates has collected it on the 

 Benito in French Congo, while the present specimen is 

 practically a topotype. 



Clia-linolobus congicus, Noack, from the Lower Congo, 

 would appear to be a synonym of G. argentatus. 



2. Glauconycteris egeria, sp. n. 



(J. No. 22. Bibundi. B.M. no. 12. 12. 13. 3. Type. 



Brown-winged ; the ears very large. 



Size about as in G. poensi's, though the skull is longer. 

 General colour uniform dusky brown, not lighter below. 

 Membranes also all dark brown^ the reticulations not specially 

 prominent. Ears much larger than in the allied species, 

 subquadrangular, the anterior basal lobule long, projecting 

 backwards ; anterior margin with its basal 6 mm. straight, 

 then strongly projecting forward, almost to an angle ; the 



* The figure in Dobson's Catalogue is incorrect, though the type has 

 the secondary cusp less developed than usual. 



