308 Mr. O. Thomas on new Neotropical 



unexpected one, but the insect runs to ohscmnis in the table 

 I made from the types, and agrees sufficiently with Smithes 

 description. The abdomen, however, has a narrow white 

 marginal hair-band on segments 2 to 4. The long black 

 hair of the head and thorax above is very strongly plumose. 



University of Colorado, 



Boulder, Colorado, U.S.A., 



May 23, 1905. 



XXX IV. — Neio iN^eoirc^^zco/ Chrotopterus, Sciuvus, Neacomys, 

 Coendou, Proechimys, and Marmosa. By Oldfield 

 Thomas. 



Chrotopterus aurttus guiance, subsp. n. 



Ends of wings broadly white for more than an inch at their 

 tips, botli the terminal phalanges of the middle finger and 

 the membrane itself white, contrasting markedly with the 

 dark colour of the rest of the membrane ; the edge of the 

 membrane between the fourth and fifth digits also white, and 

 a slight trace of a whitish edging to the membrane leading to 

 the foot. Base of thumb almost without hairs. Fur of body 

 and forearms not extending on to the membranes, which are 

 practically naked throughout. 



Other characters as described by Peters, Tomes, and Dobson. 



Forearm of type 82 mm. 



Flab. Venezuela and Guiana. Type from La Vuelta, 

 Lower Orinoco, Venezuelan Guiana. 



Ti/pe. Adult male. B.M. no. 4. 5. 7. 20. Collected 24th 

 April, 1903, by Mr. S. M. Klages. 



Chrotojyterus auritus australis, subsp. n. 



White tipping to wungs much reduced as compared with 

 C. a. guiancB; the terminal phalanx of the third digit only 

 whitened, and the membrane only lighter, not white, for about 

 half an inch at the tip ; no whitish line extending along the 

 hinder edge of the wing-membrane beyonS the end of the fourth 

 digit. Base of thumb with a distinct patch of woolly fur on 

 the metacarpus. Fur of body extending on to the wing- 

 membrane behind the elbows below, and on the interfemoral 

 membrane above behind the thighs and knees. 



Forearm of type 83 mm. 



