new C!cillicebus and Eiiinops/zo/M 5. America. 481 



been accidentally ov patlioloorically sliruiik). Keel of car- 

 conch much thickened terminally. Tragus narrower than 

 in perotis, abiut 3x1 mm.; its end rounded. Antitrai^jus 

 about 8 mm. in length, separated by a deep notch behind. 

 A lartre throat-oland in male, none in female. 



C/olour brown above and below, the bases of the hairs 

 whitish. 



Skull of very similar form to that of E.glaucinus, although 

 immensely larger — much broader and more heavily made 

 than that of the oidy species approaching it in size, E. perotis. 

 Muzzle low, rounded, sul)cylindrical. Zygomata with 

 laterally projecting shoulders above tn^, just as in f/laucinus. 

 Mesial crest well defined, though not liigh, passing behind 

 into a well-marked occipital helmet. 



Dimensions of male and female specimens (the latter the 

 type) : — 



Forearm ^'2 and 79 mm. 



Head and body 115, 106 ; tail 61, 59 ; ear (perhaps 

 shrunk) 28, 27 ; third tinger, metacarpus 83, 77, hist pha- 

 lanx 37, 33 ; lower leg and hind foot (c. u.) 45, 41. 



Skull: greatest length 33'5, 31; condylo-incisive length 

 32*3, 30'7 ; condylo-basal length 31'5, 29*4; zygomatic 

 breadth 20*4, 29*4; intertemporal brt-adth 6*1, 5'7 ; mastoid 

 breadth 17*5, 163; ])alatal length 14, 14*2; maxillary 

 tooth-row 13"7, 13'2; Iront of ;/ to back of //i^ 8'7, 8'G ; 

 breadth between outer corners of m^ 14*2, 13*4. 



Ildh. Chaco, Argentina. 



Two specimens, male and female, received for examination 

 from the Mtiseo Nacional, Buenos Ayres. The female pre- 

 sented to the British Museum (B.M. no. 14. 4. 4. 8). 



This tine species is by far the largest of all American 

 Molossidse, the oidy one that approaches it in length of fore- 

 arm and skull, E. perotis, hoxng a far more slenderly built 

 animal, with a peculiarly narrow skull. (Compared with 

 Old-World Molossines, it exceeds all except Chiromeles 

 toi-guatusy and that it practically equals in length of forearm 

 and skull, though Chiromebts is far more bulky. 



1 have named this interesting animal in lionour of Dr. R. 

 DabbvMie, Conservator of Zoology in the Buenos Ayres 

 National Museum, to whose kindness I owe the opportunity 

 of examining it. 



Ann. ct- Marj. X. Hist. Ser. 8. Vol. xiii. 



