nevj Forms qASciuiu?, Oxyraycterus^ c5c. 493 



Skull : greatest length 104'5 ; basilar length 78 ; nasals 

 35 X 18-5 ; interorbital breadth 31 ; palate length 42 ; dia- 

 stema 27 ; length of upper molar series (milk i/ still in 

 place) 22. 



Hah. Approuague, Cayenne. 



Type. Immature female. Original number 1077. Col- 

 lected 9th December, 1902, by G.K. Cherrie and B. T. Gault. 



With most animals the skull -ditFerences above noticed 

 would have necessitated specific separation, without furth3r 

 question, but this part is so variable in Dasyprocta that for 

 the present I prefer to leave the Cayenne Agouti with the 

 form to which its general appearance allies it. 



Caluromys trinitatis venezuelce, subsp. n. 



Agreeing with true trinitatis in essential characters of size 

 and coloration, but paler and with longer softer fur. 



General characters quite as in the Trinidad C. trinitatis, 

 Thos.* Fur, however, much longer, softer, and woollier, the 

 lengths of the dorsal hairs about 12-13 millim., as compare 1 

 with 8-9 millim. Colour above, instead of '' tawny oclira- 

 ceous,^' paler and duller, near Ridgway's " clay-colour " ; the 

 crown of the head alone showing a tinge of tawny. Cheeks 

 and under surface, instead of ochracsous buff, dull " crea;n- 

 buff." This latter colour is also more uniformly spread, the 

 Vvdrole of the under surface and inner sides of the limbs being 

 alike, while in trinitatis the greyish suSFusion of the flanks 

 encroaches on the sides of the middle part of the belly, so as 

 to narrow the clear buffy part to a mere median line. 



Skull and teeth as in C. trinitatis. 



Dimensions of the type (measured in the flesh) : — 



Head and body 185 millim. j tail 275; hind foot (s. u.) 

 31; ear 31. 



Skull : greatest length 47 ; combined length of three 

 anterior molariform teeth 6'7. 



Bab. Ypure, Cumana, Venezuela. Altitude 2350 feet. 



Type. Old female. B.M. no. 0.5.1.57. Collected 8th 

 March, 1899, by E. Andre. 



This mainland foim of C. trinitatis shows no approximation 

 in size or other characters to the Guianan C. philander^ L. 



* Ann. & Mag. Xat. Hist. (6) xiii. p. 43S (1894). 



