L. Harrison and T. H. Johnston 
357 
a special feature in the shape of two closely apposed strong spines, which 
probably subserve a clasping function. A large form, thickly clothed 
with spinous hairs. Characteristic of the rat-kangaroos, Aepijprymnus 
spp. 
Fig. 13. Paraheterodoxus insignis, $. (L. H. del.) 
Paraheterodoxus insignis n. sp. Figs. 13-14, 
Description of $. Head about twice as broad as long, parabolic in 
front, slightly emarginate behind the eyes, which form flat projections, 
Parasitology vm 23 
