206 Mr. 0. Thomas on new 



Skull markedly smaller than that of H. muscinus in all 

 dimensions, except that, owing to the proportionally smaller 

 size of the brain-case, the area occupied by the inflated 

 frontals is of equal extent. Frontal inflation much more 

 developed, high, convex, rounded, so as to form behind it a 

 deep concavity in the frontal profile. Supraorbital ridges 

 behind the inflation much less sharply developed. Teeth 

 smaller throughout. Small upper premolar well developed.^ 



Dimensions of the type (measured on the spirit-speci- 

 men) : — 



Forearm 44 mm. 



Head and body 45 ; tail 27 ; ear 15x13; third finger, 

 metacarpus 31, first phalanx" 13*5 ; lower leg and hind foot 

 21-7. 



Skull : length to front of canines 17*3 ; zygomatic breadth 

 9-5 ; mastoid breadth 8*1 ; front of canine to back of m 3 

 6-7. 



Bab. Utakwa Rivev, S.W. New Guinea. 



Type. Adult female. B.M. no. 13. 6. 18. 4. Collected 

 January 1912. 



This species, so like H. muscinus in other respects, is at 

 once distinguished by the remarkable duplication of the 

 posterior nose-leaf. 



The following new Hipposideros may also be conveniently 

 described here : — 



Hipposideros stenotis, sp. n. 



Allied to H. semoni, Matsch., but smaller, and with con- 

 spicuously smaller skull and teeth. 



External characters very much as in H. semoni, the mesial 

 wart on the sella similarly elongate and the ears equally, or 

 perhaps even more, remarkably narrowed and pointed. 

 Posterior nose-leaf with its convexity behind not developed 

 into a supplementary leaf. Tail with its two terminal 

 vertebrse absent or aborted in the type, but this may be 

 accidental or pathological. 



Skull much smaller in all dimensions than in semoni, the 

 frontal prominences less developed. Teeth even more 

 reduced in proportion than the skull, the molars only about 

 half the bulk of those of semoni. Small upper premolar 

 absent in the type, as it is in the type of semoni, but this is 

 evidently an inconstant character, as the tooth is present in 

 the two Museum specimens of semoni. 



Dimensions of the type (measured on the spirit-speci- 

 men) : — 



Forearm 43*5 mm. 



