264 Mr. i cf Lea on some 
convexity) is normally vertical,* some species of Hdusa 
are quite as parallel, as thin and elongate, and many have 
the labrum quite as deeply emarginate. The legs also 
are certainly not as in any species of Edusa in the South 
Australian Museum, more nearly resembling those of 
several species of Colaspoides and of Geloptera. The speci- 
men before me is a male, its femora are stout and edentate, 
hind tibiae dilated to apex, notched at the lower apex, 
and with a long apical bristle, basal jomt of four front 
tarsi strongly inflated and of the hind ones elongate, and 
claws with a wide basal appendix. The fourth | segment 
of the abdomen is as long as the second and third com- 
bined, the fifth is transversely impressed across the middle, 
with its apex incurved and elevated. The upper surface 
is clothed with short and rather sparse but quite distinct 
pubescence, longer at sides and base of prothorax than on 
head and elytra, on parts of the under-surface the pubes- 
cence is fairly dense and on the abdomen there are some 
rather long straggling hairs. The head and prothorax 
are shagreened. I consider the genus (on account of the 
sexual features of the abdomen and legs) as distinctly 
closer to Colaspoides than to Edusa; and although not a 
sharply defined one, quite as distinct as many others of 
the sub-family. O. pallida is a Megasceloides. 
MEGASCELOIDES. 
The original diagnosis of this genus + was placed between 
descriptions of species of Macrolema and Mi icrogonus, and 
the genus was compared with Megascelis. There is no 
doubt therefore but that Jacoby considered it as not 
belonging to the Humolpides ; nevertheless in treating of 
the Criocerides (23—1904) and Megascelides (32—1905) in 
Wytsman’s “Genera Insectorum,’ he included it in 
neither. Blackburn, in referring a second species to the 
genus, said he had doubtfully regarded it as belonging to 
the Megascelides. M. pallidus of Jacoby was identified 
by Blackburn as a species from Western Australia that 
appears to me to agree well with the original description ; 
but this species is identical with one sent for examination 
* Accidental causes and the manipulation used to “set” parts 
of the head must often result in its being somewhat out of its proper 
position. 
t+ Ann. Soc, Ent. Belge, xlii, p. 351. 
Fat 
