518 rHTLL0ST0MIl>J5. 



Var. a. 

 Artibeus concolor, Peters, MB. Akad. Berl. 1865, p. 357. 



Much smaller than adult specimens of A. planirostris, the fore- 

 arm measuring l"-85 as compared with 2"-6. Pur, above imiform 

 brown, paler beneath, without either white streaks on the head or 

 white spots on the shoulders ; wing-membranes dark brown, except 

 the space between the second and third finger, which is whitish 

 brown. In other respects quite similar to A. planirostris. 



Length (of an adult <S), head and body 2"-6, head 1", ear 0"'63, 

 nose-leaf 0"-48, forearm l"-85, tibia 0"-7. 



Hub. Paramaribo, Surinam. 



Type in the collection of the Berlin Museum. 



The above is taken from Dr. Peters's short description, as I have 

 not yet seen the type. 



a. $ ad., al. Upper Amazons. Purchased. 



2. Artibeus bilobatus. 



Uroderma personatiim, Peters (non Wagner), MB. Akad. Berl. 1865, 



pp. 587, 588 (see footnote). 

 Uroderma bilobatum, Peters, I. c. 1866, p. 392. 



Ears, lips, and lancet-shaped portion of the nose-leaf (except that 

 the margin is finely crenulately serrate) quite similar to those of 

 Vampyrops Jielleri (see p. 524). The horseshoe, of which the 

 margin is free round about, is distinguished from that of every 

 other species by the presence of a rounded lobe on either side. 



The wing-membrane does not quite extend to the end of the 

 metatarsus. Interfemoral naked, or thinly sprinkled over with very 

 short hairs, triangularly emarginate behind. Calcaneum very short. 



The fur of the body extends as far as the middle of the forearm ; 

 the whole tibia and the lower end of the femur naked. 



Brown, with four white streaks on the head and a white line 

 along the middle of the back. 



Length (of an adult cJ preserved in alcohol), head and body 3", 

 head 0"-95, ear 0"-6, tragus 0"-2, forearm l"-6, thumb 0"-4; third 

 finger — metacarp. l"-55, 1st ph. 0"-55, 2nd ph. 0"-85, 3rd ph. 0"-6 ; 

 fourth finger— metacarp. l"-53, 1st ph. 0"-48, 2nd ph. 0"-25 ; fifth 

 finger — metacarp. l"-53, 1st ph. 0"-35, 2nd ph. 0"*5 ; tibia 0""6, 

 calcaneum 0"-2, foot 0"-4, interfemoral membrane in the middle 

 0"-43. 



JIab. Cayenne ; Brazil (St. Paulo). 



The above is a translation of Dr. Peters's description of this 

 species, of which I have not yet examined a specimen. It was at 

 first mistaken by Dr. Peters for PJiyUostoma personatum. Wagner; 

 but the tj'pe of that species has been lost, and the description given 

 by Wagner is quite insufiicient, being equally applicable, as Dr. 

 Peters remarks, to large specimens of either Vampi/rojys lincaius or 

 Chiroderma vilJosinn. 



