E. LÖNNBERG, MAMMALOGY OF ECUADOR. 7 



shade of »warm sepia», according to Oberthör and Dau- 

 THENEY Rép. d. Coul. (darker than the same according to 

 Ridgway). This dark colour projects angularly on the 

 crown and extends as a narrow mesial stripe to the dark 

 brow band. The lower parts are greyish white, the belly of 

 the male, however, with a rufous tinge. The arms of the 

 female are more greyish than the back. Otherwise the de- 

 scription of Allen's acquatorialis fits pretty well. The arms 

 of the male have partly a yellowish brown tint. 



The tail of the female is paler on its distal parts, that 

 of the male is dark above to the end, as Allén describes it 

 to be in aequatorialis. 



It is possible that the discrepancies only are due to 

 individual variation, as Allén speaks of one of his males as 

 being darker, but it is also possible, that a somewhat darker 

 race lives on the mountain slopes, and the true aequatorialis 

 only at the sea-level. 



It is possible that this darker race is intermediate be- 

 tween C. aequatorialis Allén and C. malitiosus Elliot from 

 Colombia. 



Lagotlirix infuiiiata Spix. 



1 c? ^V^2 1919, near Rio Curaray, Oriente, Ecuador, alti- 

 tude abont 1,000 feet. 



As this species appears to vary in colour, and the de- 

 scriptions in the literature differ, the following notes may 

 be made. Head very dark brown almost black. Dorsal 

 parts grizzled greyish brown which colour is effected by the 

 hairs having whitish tips, black subterminal rings and buff 

 to »dark fawn» (Oberthör & Dauthenay 397, 2 & 3) basal 

 parts. Towards the flanks the latter colour becomes more 

 dominating and shades finally into »fawn» (1. c. 308, 2) 

 towards the central under parts, which are covered with 

 rather suddenly lengthened black hairs which measure about 

 8 cm in length, while the hairs of the back are short, about 

 10 — 13 mm. The long ventral hairs begin on the upper 

 breast and the axillae and continue to the vent. On the 

 middle of the belly they are fawn-coloured with long black 

 ends, but around the scrotum black again. The outer side of 



