344 
Mallophaga from Marsupials 
Description of d- Like the last species, but with head and thorax 
proportionately larger; head with a more indented outline, due to the 
fact that the dorsal plate covering the antennary fossa is roughly 
triangular, instead of quadrangular; the apex projecting above the 
fossa, and giving an indentation in the outline on either side; the tubercle 
and spine protecting the eye are, in this species, borne upon this plate, 
and not on the chitinous framework of the fossa; posterior angles of 
temporal lobes projecting more prominently backwards behind the 
occiput; prothorax almost half as wide again, and has a more trans¬ 
versely elongate appearance; metathorax of same general character, 
but relatively wider, and a little longer; abdomen similar, but relatively 
broader; posterior extremity similar. 
Pig. 3. (A) Latumcephalum macropus, (B) L. le.soueft, (L. H. del.) 
Measurements in millimetres. 
3 
Length 
Breadth 
Head 
0-235 
0-470 
Prothorax 
0-115 
0-271 
Mesothorax 
0-020 
0-138 
Metathorax 
0-140 
0-295 
Abdomen 
0-800 
0-538 
Total length and 
1-310 
0-538 
greatest breadth 
The only female at our disposal is immature, but indicates the same 
sexual dimorphism as in L. macropus. 
On Macropus ualabatus, Victoria, Le Souef collection. 
