VOL. XII, PP. 95-6 APRIL 30, 1898 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW MURINE OPOSSUM FROM MARGARITA ISLAND. 

 BY OUTRAM BANGS. 



While on the Island of Margarita, Venezuela, in the summer 

 of 1895, Lieutenant Wirt Robinson, U. S. Army, collected five 

 murine opossums. "Four of these he presented to the National 

 Museum at Washington and one to. me. These specimens rep 

 resent a very pallid insular race that may be known as 



Marmosa robinsoni sp. nov. 



Type from Margarita Island, Venezuela, cT adult, No. 7749, coll. of E. 

 A. and 0. Bangs. Collected July 12, 1895, by Lieut. Wirt Robinson, U. S. 

 Army. Orig. No. 506. 



General characters. Similar to M. murina, but much paler and more 

 yellow; black mark through eye less extensive; ear (in dried skins) 

 considerably smaller; skull similar to that of M. murina. 



Color. Upper parts, clay color, becoming paler and more yellowish on 

 sides ; sides of neck and top of nose back to between eyes dull bufFy yel 

 low ; black mark through eye less extensive and duller than in M. mu 

 rina. Under parts, dull straw yellow to base of hairs ; line of demarka- 

 tion between colors of upper and under parts much less distinct than in 

 M. murina; feet and hands dull yellowish white. 



Measurements. 



* Coll. of E. A. and 0. Bangs. 



fColl. of National Museum, Washington. 



2-2-Bior,. Soc. WASH., Vor,. XII, 1898 



(95) 



