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



the humerus to the middle of the femur, the remainder of the mem- 

 brane nearly naked ; a few fine hairs appear behind the distal half 

 of the forearm on the upper surface, and clothe the proximal third 

 of the fifth metacarpal bone ; beneath, the wings are quite naked, 

 except along the sides of the body. 



Upper incisors long, the centres of their inner sides close together, 

 their bases and summits separated ; lower middle incisors slender, 

 with grooved crowns ; outer incisors very small, between the middle 

 incisors and the canines, and not grooved. First upper premolar 

 large, close to the canine, with a large anterior and internal basal 

 cusp, and a smaller cusp posterior and external. Lower canine on 

 each side with a small internal basal cusp, which nearly touches its 

 fellow of the opposite side. 



Length (of an adult rf ) : head and body 2"3 ; tail 1"*2; tail 

 free from membrane 0""4 ; head "'85 ; ear 0"*6, tragus 0"*15x 

 0"'l ; forearm 1"*85; thumb 0"*25; second finger — metacarp. 1 "*35, 

 1st ph. 0"*6, 2nd ph. 0" - 65; third finger — metacarp. 1 " "25, 1st ph. 

 0"-5, 2nd ph. 0""2 ; fourth finger — metacarp. "'85, 1st ph. 0" - 4, 

 2nd ph. 0"*15 ; tibia 0"*4 ; foot and claws 0"*3. 



Hab. Brazil (Buenos Ayres, Barra do Bio Negro) ; British Guiana 

 (Berbice). 



The next species is probably identical with Myopterus daubentonii, 

 Geoffroy (Descr. de l'Egypte, ii. p. 113), with which it agrees very 

 closely in the length of its skull, the only remnant of the type of 

 that species, which therefore cannot be accurately determined. Of 

 this skull Prof. Peters (MB. Akad. Berl. 1869, p. 402) has given 

 the following measurements : — " length 0" - 85 ; width across zygo- 

 matic arches 0"*5 ; length of upper tooth-row (not including incisors) 

 0"*32 ; length of lower tooth-row 0""35." 



3. MOLOSSUS BRACHYMELES. 



Molossus (Molossops) brachymeles, Peters, Monatsb. Akad. Berlin, 

 1865, p. 575. 



Appears to differ from the preceding species only in being conspicu- 

 ously larger, in the different colouring of the fnr of the under sur- 

 face, and in its slightly different distribution. 



Fur above dark brown, the base of the hairs paler ; beneath 

 reddish brown. The antebrachial membrane is covered with a small 

 patch of fur along the forearm, and the wing-membrane between 

 the metacarpal bones of the last two fingers and the forearm. Be- 

 neath, the fur of the body extends upon the wing-membrane along 

 the sides of the body only ; the remaining parts are cpiite naked. 



Total length 4" - 0; head 0"*9; ear 0"*6 ; forearm 1"'7 ; middle 

 finger 3"-4 ; tibia 0"'5 ; foot 0"'46. 



Hab. Peru. 



The above is taken from Prof. Peters's description of the only 

 specimen known, a stuffed skin, preserved ill the Neuchatel Museum. 



