8 LÖNNBERG, RESULTS OF DR. E. MJÖBERG”S SWEDISH SCIENTIFIC EXPEDITIONS TO AUSTRALIA 1910—13. 
Macropus agilis nigrescens n. subsp. — 1 ds >»inside the sandy ridge at Cable 
Beach near Broome», ”/. 1911. 1 J 8 miles from Broome, 2 miles from the beach 
3/6 1912. 2 juv. »with a small young in the pouch, from a sandy place near Cable 
Beach, Broome» !4'/e. J juv. the same locality '”/e. 
1 S, IS juv. Beagle Bay zoo 
All these specimens are quite similar inter se and differ plainly at the first 
look from the specimens of M. a. aurescens in being darker. This is effected by a 
great number of the hairs on the back and sides being broadly tipped with black. 
Fig. 4. Macropus agilis awrescens 2 semiadult. Fitz Roy river !/2 1911. 
(E. MJÖBERG phot.) 
while the ground colour is buff. The face is also darker in general, and the mar- 
kings as well. The tail is tipped with blackish. The under fur of the belly is to a 
greater or less extent dark grey or dusky. 
The skulls of these animals are rather similar to those of M. a. aurescens 
except that the anterior part of the palate is narrower and more strongly constricted. 
In connection with this, the groove on the lateral surfaces of the maxillaries in front 
of the premolar is more pronounced, and in consequence of this the ridge between 
the palatal and lateral surfaces of the maxillary bone more prominent, and at the 
same time the maxillary is above this groove more abruptly bowed out than in M. a. 
aurescens. The postorbital constricted portion of the skulls from Dampier land is 
also narrower than specimens of corresponding size and age of M. a. aurescens. 
