South- American Forms oj Rliogeessa. 'iS^?* 



flatter above, with lower and narrower brain-case, less widely 

 expanded zyg-omata, and less convex forehead. Occipital 

 '' helmet " well developed, the posterior outline in upper view 

 niaikedly angular mesially. 



Teeth as in B. tumida, but slightly smaller throughout. 



Forearm of the type (c?) 28 millim. Of three paratypes, 

 (c?) 27-6,_28-3,_(?)29. 



Other dimensions of an adult male in spirit : — ■ 



Head and body 38 millim. ; tail 28; head 15; ear-length 

 125; third finger, metacarpus 25"5, first phalanx 10, second 

 pl'.alanx 9'3; lower leg and foot (c. u.) 15*5; calcar 10. 



Skull : greatest length 12-1 ; length in middle line above 

 10"3; zygomatic breadth 8*1; breadth of brain-case 60; 

 front of lower canine to back of m^ 5*0. 



Ilah. Valencia, Venezuela. 



T(/pe. Skin. Male. B.M. no. 94. 9. 25. 1. C .llected 

 Nov.-Dec, 1893, by A. ]\Iocquerys. Three ])araty[)e5 in 

 spirit and an additional skin from Bogota [G. D. Child). 



Iihogeessa velilla, sp. n. 



Closely similar to R, io in all respects, agreeing with it in 

 size, colour *, and proportions, but the skull is quite without 

 the marked '' helmet" found in all the other forms, the poste- 

 rior line of the skull running directly across without mesial 

 angular projection behind. This character is an important 

 one and has even been made the basis of the generic distinc- 

 tion of ^^ EptesicAis''^ from Vesjjerdiio. Like, tlierefore, as 

 E, velilla is to R. io in other respects, I am compelled to 

 consider it distinct on this account. Tiie specimen is at least 

 as old as, if not older than, 

 which I have compared it. 



Dimensions of the type : — 



Forearm 28 millim. 



Head and body 40 millim. f; tail 35 f; third finger, meta- 

 carpal 25, first phalanx 8'8 ; lower leg and foot (c. u.) 16; 

 calcar 10. 



Skull: gr>_'atest length 11*8; length in middle line above 

 10*0; interorbital breadth 3"1; breadth of brain-case 5 7; 

 front of lower canine to back of wg 4'9. 



Ilah. Pura, Puntl Ii|land, Gulf of Guayaquil, Ecuador. 



Type. Old male. B.M. no. 99. 8. 1. 5. Original number 

 43. Collected 11th November, 1898, by the late P. O., 

 Simons. 



* Light bases to hairs rather more whitish. 



t Measured by collector in the flesh. The other climensinns from the 

 (liifd .-^kiii. 



