Mr. O. Thomas on Agoutis. 311 
zygomatic breadth 48°5; nasals 35:6; interorbital breadth 
29: “A; palatilar length 40; upper tooth-series 17°7. 
Hab. Paraguay. Type from near Concepcion. 
Type. Old female. B.M. no. 98. 7.3.7. Collected by 
Mr. T. Insley. Presented by Oldfield Thomas, Five speci- 
mens examined. 
The specific term is suggested by Don Felix d’Azara’s 
Christian name, 
Cope’s D. aurea from Chapada, Matto Grosso, stated by 
Allen to be founded on an albino, is, as dierad by some 
specimens from that place in the British Museum, barely 
distinguishable subspecifically from D. azare. 
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. azare, and 
may be called 
Dasyprocta azare catrine, subsp. n. 
General colour paler and greyer than in true acare of Sio 
Paulo, the fore-back and sides scarcely tinged at all with 
yellow ; the rump also yellowish, not hoary grey as is 
usual in azare. 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 azare. 
Skull of type, immature (p* just changing): greatest 
length 102 mm.; condylo-incisive length 87; upper tooth- 
row 18°8. 
Hab. Santa Catherina, 8. 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. azare is Roca Nova, Parana, where M. Robert 
collected a series. His specimens, however,show no approach 
to the peculiar coloration of D. a. catrine. 
