the Loicer Amazons. 281 



but little caudal white, and may be the iieai-est ally of the 

 present form, but its tail has a considerably longer funy 

 portion at its base. 



54. Marmosa coUega, sp. n. 



c?. 154. Villa Brao-a, Rio Tapnjoz. 



A large species of the incana group; £uiry part of tail 

 about an inch in length. 



Size rather larger than in incana. Fur of modeiatc lena'th, 

 hairs of back about 7 mm. in length. General colour above 

 dull cinnamon, about as in M. murina. Under surface and 

 inner side of limbs dull creaniy white, the whitish ari*a 

 narrowed on the belly, where it is about an inch in breadth. 

 Black orbital rings well marked. Hands and feet whitish. 

 Tail-base furry for about an inch, though the fur there is only 

 about 4—5 mm. in length ; rest of tail naked, brown, with 

 fine and inconspicuous white marblings throughout its length, 

 but these are probably often absent. 



Skull long, narrow, more strotigly built than in incana, 

 with well-marked parallel beads along tlie supraorbital edges, 

 not projected outwards into ledges. Teeth proportionally 

 small. 



Dimensions of the type : — 



Head and body 148 mm.; tail 204; hind foot 21; 

 ear 22. 



Skull: greatest length 40'5 ; condylo-basal length 402 ; 

 zygomatic breadth 20"7; nasals 19*3x4'7; interorbital 

 breadth 7; breadth across supraorbital beads 7*1; palatal 

 length 23 ; breadth across outer corners of vi^ 11"4 ; maxillary 

 tooth-row IG'o ; length of three anterior niolaiitorm teeth "'^ 

 6-4. 



JIah. as above. 



T;jpe. Old male. B.M. no. 20. 7. 14. 40. Original 

 number 154. Collected 7th June, l'J17, by Friiiilein 

 Sn(;thlage. 



This species belongs to the incana group, which does not 

 have triangular ]>ostorbital processes proj cting over the 

 orbits. It is larg(!r ami tnoic brown-colouriul than M. nicawij 

 and has a longer furry base to its tail. 4'his latter characicr 



* /. e., p', Hi', aud m*, not 7np^, p\ and in^ as Dr. Cabrera seems to 

 have taken wlien describing bis typo of Maniiosa polita, which is n it 

 adult, but still retains its milk p^. This is clearly shown by the excellent 

 figure he gives. 



Ann. tC; Mag. N. Hint. Ser. 9. Vol. vi. U) 



