Mr. 0. Tlionicas on Agoutis. 313 



JTearly seventy years ago an agouti was collected on 

 Grorgona Island, off the west coast of Colombia, hy Capt. 

 Kellett and Lieut. Wood, during the cruise of 11. M.S. 'Pan- 

 dora.' Tlie specimen was registered as " Dasi/procta aguti,''^ 

 and, being immature and not in good condition, has not 

 hitherto been re-examined. 



Now, however, on comparison with skulls of similar age 

 of the allied species I find that it is so much smaller as to 

 deserve specific distinction. 



Dasyprocta pandora, sp. n. 



General colour-characters of D. variegata, but size much 

 smaller. 



Fore-back and sides grizzled yellow and black, the yellow 

 more prominent on the middle l)ack ; lengthened rump-hairs 

 black, witii yellowish tips. Feet black, with a ^qw fine 

 yellow hairs intermixed. 



Dimensions of the type : — 



Hind foot (dry) 90 mm. 



Skull : greatest length 89 ; zygomatic breadth 42*5 ; 

 nasals 31 ; palatilar length 33*5; combined length of mp^, 

 »;i\ and m^ 13'2 ; mp^j length '4'9, breadth 4. 



Hah. Island of Gorgona. 



Type. Immatux*e male. B.i\I. no. 50. 1. 26. 29. Collected 

 and presented by Capt. Kellett and Lieut. Wood, of H.M.S. 

 ' Pandora.' 



No doubt this is a diminished insular representative of 

 D. variegata. Its reduction in size is shown by the fact that 

 skulls of that animal of about tlie same age are upwards of 

 105 mm. in. length, while the tliree teeth above measured 

 may together be 15 mm. in lengtli, mp'^ being 5'6x 4*3, and 

 the other teeth also conspicuously more bulky. 



That this animal is a genuine native of Gorgona, about 

 which I had always had a doubt, has been proved by 

 Mr. Bangs, Avho, in 1908, included a specimen of it in his 

 list of the mammals of the island "^. His specimen was also 

 young — too young for certain determination, — and he only 

 provisionally referred it to D. variegata. 



The other two land-mammals obtained by him — Cehus 

 curtus and ProecMmys gorgonoi — were both described as new. 



* Bull. Mus. Harvard, xlvi. p. 89. 

 Ann. ct- Mag. N. Hist. Ser. 8. Vol. xx. 21 



