L. Harrison and T. H. Johnston 
355 
Heterodoxus brevispinosus n. sp. Fig. 12. 
This species is founded upon a single $ collected by Mr A. S. Le Souef 
from a pouched mouse, Phascologale flavipes, at the Sydney Zoological 
Gardens. We include it for the present within the genus Heterodoxus, 
but its characters lie in some respects intermediate between that genus 
and Boopia, and it may later form the type of a distinct genus. 
Fig. 11. c? genitalia of Heterodoxus Fig. 12. Heterodoxus brevispinosus, $. 
longitarsus from Macropus wilcoxi. (L. H. del.) 
(L. H. del.) 
Description of $. Head almost twice as wide as long, roughly 
hemispherical in shape, with temporal lobes showing a slight truncation 
with two rounded angles, a condition intermediate between Heterodoxus 
and Boopia. The eye is prominent, with a large pigment fleck and a 
very short thick spine; and is followed by a very slight emargination, 
in the angle of which is a short prickle. The occiput carries a pair of 
stout spines externally, and between them two pairs of hairs, the outer 
