Mr. O. Tliomas on Agoutis. 311 



zyf^omatlc breadth 48"5 ; nasals 35*6 ; interorbital breadth, 

 29"4; palatilar length 40; upper tooth-series 17'7. 



Jjtab. Paraguay. Type from near Concepcion. 



Tj/pe. Old female. B.M. no. 98. 7. 3. 7. Collected by 

 Mr. T. lusley. Presented by Ohlfield Thomas. Five speci- 

 mens examined. 



The specific term is suggested by Don Felix d'Azara's 

 Christian name. 



Copers D. aurea from Ciiapada, Matto Grosso, stated by 

 Allen to be founded on an albino, is, as indicated by some 

 specimens from that place in the British Museum, barely 

 distinguishable subspecifically from D. azarce. 



The British Museum has possessed for many years an 

 undetermined agouti from Santa Catherina — a locality further 

 south than any place from which a Dasyprocta has been 

 recorded. This specimen appears to represent a new sub- 

 species of its nearest geographical neighbour D. azarce^ and 

 may be called 



Dasyprocta azarce catrince, subsp. n. 



General colour paler and greyer than in true azarce of Sao 

 Paulo, the fore-back and sides scarcely tinged at all with 

 yellow ; the rump also yellowish, not hoary grey as is 

 usual in azarce. But the most marked character is that 

 the long hairs of the rump, instead of being ringed with 

 brown and whitish to the base, are straw-yellow for the 

 greater part of their length, an inconspicuous brown ring 

 quite close to the base and one or two others near the tip 

 alone interrupting the yellowish colour, which is unbroken 

 for some 40-70 mm. on the longer hairs. Under surface 

 grizzled greyish laterally, yellowish white mesially. Feet 

 grizzled black and yellow, darker terminally, as in azarce. 



Skull of type, immature (p* just changing): greatest 

 length 102 mm.; condylo-incisive length 87; upper tooth- 

 row 18-8. 



Uab. Santa Catherina, S. Brazil. 



Type. Immature male. B.M. no. 46. 6. 1. 29. Purchased 

 of Parzudaki. 



The nearest locality to Santa Catherina from which we 

 have D. azarce is Roca Nova, Parana, where M. Robert 

 collected a series. His specimens, however, show no approach 

 to the peculiar coloration of JJ. a. catrince. 



