4 1 8 Bulletin American Museum of Natural History. [Vol. XX, 



one as I was mothing near Valparaiso; the animal was 

 dazzled by my lantern and I easily knocked it into my insect 

 net. Near Mamatoco I found one in a hollow tree which it 

 had entered through a hole ten feet above the ground ; it was 

 driven out with difficulty and could not see in the daylight. 

 ' ' They use the tail to balance and steady their bodies while 

 moving about the slender branches. A common position is 

 transversely across the upper side of a branch, the fore feet 

 close together and the tail passing beneath and over the 

 branch; they seldom or never reach upward with the tail."- 

 H. H. S. 



2. Metachirus nudicaudatus colombianus Allen. One 

 specimen, adult male, Don Amo, April 20. (See this Bulletin, 

 XIII, 1900, p. 196.) 



3. Caluromys cicur (Bangs). One specimen, skull only, 

 Minca. 



4. Didelphis marsupialis colombica (Allen). Twenty 

 specimens, all from the vicinity of Bonda, except one from 

 Valparaiso. (See this Bulletin, XIII, 1900, p. 193; XIV, 

 1901, pp. 176, 186; XVII, 1902, pp. 260, 276.) 



"OPOSSUM. Common in the dry forest and found in the 

 mountain forest as high as 5000 feet. It is nocturnal, though 

 sometimes moving about during the cool hours of the day. 

 It passes the greater part of the time in trees, occasionally 

 descending to the ground. Opossums seem to be very gen- 

 eral feeders, eating insects, young birds, eggs, chickens when 

 they can get them, and sometimes fruits. They make their 

 homes in hollow trees, generally high above the ground. In 

 Colombia the flesh is seldom eaten." H. H. S. 



The Water Opossum (Chironectes minimus) was taken at 

 Santa Marta a single specimen by Mr. Brown (Bangs, 

 Proc. New Engl. Zool. Club, I, 1900, p. 90). 



5. Bradypus tridactylus Linn. Not represented in the 

 collection sent to the American Museum, but the skull of the 

 specimen referred to below by Mr. Smith has been kindly 

 loaned to me for examination by Mr. W. E. Clyde Todd, 

 Custodian of Mammals and Birds at the Carnegie Museum. 

 Mr. Todd has also kindly sent me a description of the exter- 



