1904.] Allen, Mammals from Santa Maria, Colombia. 437 



25. Oryzomys mollipilosus Allen. Eleven specimens, of 

 which only 5 are adult, collected as follows: Valparaiso, 6, of 

 which 3 are adult; Don Diego, 4, of which only i is adult; 

 Minca, i. (See this Bulletin, XII, 1899, p. 208.) 



Mr. Bangs gives 0. laticeps (Lund) as occurring abundantly 

 at 8000 feet in the Santa Marta Mountains. The three pre- 

 ceding species (0. magdalena, O. villosus, and 0. mollipilosus) 

 have been compared with authentic specimens of 0. laticeps 

 in the British Museum, and all prove to be decidedly different 

 from 0. laticeps. While closely related inter se, they are 

 readily distinguishable by the characters already given. 



26. Oryzomys trichurus Allen. Five specimens, 3 adults 

 and two young, from Bonda and immediate vicinity. (See 

 this Bulletin, XII, 1899, p. 206.) The tail varies greatly in 

 amount of hairiness, in two specimens the tail being scantily 

 clothed, and in the third (the type) heavily clothed. Possibly 

 more than one species is represented by these specimens. 



27. Oryzomys (Melanomys) columbianus (Allen). Seven 

 specimens ; 6 from Manzanares and i from Minca. (See this 

 Bulletin, XII, 1899, p. 203.) 



A reexamination of these specimens shows that the original 

 reference of this species to Akodon was erroneous. While 

 Akodont in many features, it is better referred to Oryzomys, 

 as a member of Thomas's subgenus Melanomys, proposed for 

 0. ph&opus and its near allies. 



Mr. Bangs reports Rhipidomys Venezuela Thomas from the 

 Santa Marta Mountains, but there is no representative of this 

 genus among the Muridae of the Smith Collection. My 0. 

 trichurus is not a Rhipidomys, as suggested by Mr. Bangs 

 (Proc. N. Engl. Zool. Club, I, 1900, p. 94). 



28. Sigmodon sanctaemartae Bangs. Ninety specimens, 

 skins and skulls, and 7 additional skeletons, of which about 

 one half were collected at Minca, at altitudes varying from 

 100 to 2000 feet, and the rest at Bonda, Onaca, and neighbor- 

 ing localities at altitudes varying from 100 to 500 feet. 



In coloration and general external appearance, S. sancta- 

 marta greatly resembles 5. boruca from Costa Rica, and 5. 

 bogotensis from Bogota, Colombia; nor is there apparently 



