1887.] MAMMALS FROM DEMERARA. 151 



peculiar Dormouse-like subgenus Rhipidomys is a very interesting fact, 

 and shows how much these small mammals have been neglected by the 

 very numerous collectors who have worked in the different parts of 

 Guiana. The following is a list of the species, with short notes by 

 Mr. Sclater upon their habits, &c. 



1. Vesperugo (Vesperus) hilarii, Geof. 



a. Maccasseema, Pomeroou R., 15/12/86. 

 " Caught in the store-room in the daytime ; apparently it VFas 

 crawling about the place, and made no attempt to fly away." — 

 W. L. S. 



2. Furia horrens, F. Cuv, 



a. Maccasseema, 11/86. 

 "This was the common House-bat of Maccasseema and flew 

 about the premises at dusk. The individual obtained was killed by 

 Mr. imThurn."— ir.i. /S'. 



3. Rhynchonycteris naso, Wied. 



a~d. Marakka, 20 miles up the Pomeroon, 15/12/86. e. Near 

 Maccasseema, 5/12/86. 

 •' These Bats cling most of the day to the stump of a tree over- 

 hanging the water, and when disturbed take short flights and again 

 return to the same place." — W. L. S. 



See also Dobson, Cat. Chiropt. B. M. p. 368 (1878), and ira 

 Thurn, 'Among the Indians of Guiana,' p. 115 (188J). 



4. Saccopteryx leptura, Schr. 



a. Calicoon, close to the junction of the Essequibo and Maza- 

 runi Rivers, 14/11/86. 



"This Bat I knocked down about dusk, say 5.30 p.m., with a 

 long stick, just outside the house. Several others were flying about, 

 but I was unable to secure any more." — 7F. L. S. 



In this specimen the wing-pouches are unusually large and dis- 

 tended, and from each of them there projects a prominent white 

 frill of skin, which can apparently be exserted or withdrawn at 

 pleasure. From the marked development of these organs, un- 

 doubtedly sexual in their nature, it may be inferred that the late 

 autumn is the pairing-time of this species, at least in Guiana. 



5. Glossophaga soricina. Pall. 



a, b. Pen Hope, 13/10/86. On the coast 20 miles east of 

 Georgetown. 

 " This Bat was found in the house in considerable numbers." — 

 W. L. S. 



6. HoLOCHiLus (Nectomys) sauAMiPES, Brandt. 



G.Young. Pen Hope, 12/10/86. 

 "Caught in the cane-fields, and brought to me by a coolie." — 

 W. L. S. 



