712 MR. G. E. DOBSON ON THE MOLOSSI. [Nov. 7, 



tragus 0"-08x0"'02; forearm 2"-0 ; thumb 0"-3 ; second finger 

 — metacarp. 2"-05, 1st ph. 0"'95, 2nd ph. 0"95 ; third finger — 

 metacarp. 2"0, 1st ph. 0"75, 2nd ph. 0"'15; fourth finger — meta- 

 carp. 1" 2, 1st ph. 0"-5, 2nd ph. 0"-22; tibia 0"7 ; foot and 

 claws 0" - 4. 



Hab. Brazil ; Central America (Guatemala) . 



The above description has been taken from an adult male speci- 

 men obtained by Mr. Salvia in Guatemala, and preserved in alcohol in 

 the collection of the British Museum. The only other specimens 

 known are imperfectly preserved skins, the types of M. nasutas, 

 and M. fumarius, Spix, of which the first intelligible description 

 was published by Dr. Peters. 



This species is quite intermediate between M. rufus (Subg. Molos- 

 sus) and M. abrasus (Subg. Promops), agreeing with the former 

 in the form of the ear, and even in the distribution of the fur, with 

 the latter in the form and number of the teeth. 



6. MoLOSSUS ABRASUS. 



? Molossus ater, Geoffroy, Annal. du Mus. vi. (1805) p. 153. 



Dysopes abrasus, Temminck, Monogr. Mammal, i. p. 232, ii. 

 p. 350(1835-41); Wagner, Suppl. Schreb. Saugeth.i. p. 475(1844), 

 v. p. 7i0 (1855). 



Dysopes longimanus, Wagner, Wiegm. Archiv, 1843, p. 367 ; 

 Suppl. Schreb. Siiugeth. 1855, p. 709. 



Dysopes leucopleura, Wagner, /. c. ; Burmeister, Thiere Brasiliens, 

 p. 73 (1854). 



Molossus abrasus, Peters, Mon. Akad. Berlin, 1865, p. 574. 



Ears much shorter than the head, but conspicuously larger than 

 in M. rufus, united by their bases only on the muzzle at a point 

 equally distant from the anterior commissure of the eyelids and the 

 nostrils ; outer and inner margins of the ear regularly convex, forming 

 together almost a perfect arc of a circle ; antitragus half-cordate, 

 with a broad base, separated behind by a deep notch ; keel of the 

 ear-conch well-developed, thickened and expanded externally in lower 

 half ; tragus minute, linear, subacutely pointed, slightly larger than 

 in M. rufus, but with a broad base. 



Muzzle obtuse, nasal apertures directed forwards and slightly out- 

 wards, the end of the nose scarcely projecting beyond the margin of 

 the upper lip, which is separated from the margin of the nostrils by 

 a space less wide than in M. rufus ; the external margins of the 

 nostrils more prominent than in that species, and continued upwards 

 and inwards above the nasal apertures, and downwards between them 

 in a conjoined ridge to the margin of the lip ; the upper margin of 

 the nasal disk thus formed on each side is finely and evenly toothed, 

 and the internasal ridge covered with short spoon-shaped hairs, simi- 

 lar to those forming a broad patch between the nostrils and upper 

 lip in M. rufus, but strictly limited to this ridge ; the margin of the 

 upper lip in front is fringed with straight hairs. 



Wings from the ankles, or from the tibiae slightly higher up. 

 Gular sac distinct in J, rudimentary in 2 . .. 



