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re - = 
Australian Chrysomelidae in the British Museum. 265 
by Mr. Arrow as Ocnus pallidus of Baly. I believe its 
position to be fairly close to Edusa ; its pygidium (normally 
almost or quite concealed) has the deep median furrow that 
appears to be invariably present in the Humolpides. 
Terillus squamosus Baly, also belongs to the genus, and 
probably ZT. perplexus Baly, and duboulayz Baly. Those 
known to me may be thus tabulated— 
Elytra densely clothed. 
Elytra with long erect hairs in addition to depressed clothing. 
squamosus Baly. 
Elytra without long erect hairs . ‘ : . arrowt Lea 
Elytra glabrous (the margins sometimes excepted). 
Elytra with sides and suture deeply infuscated. 
circumcinctus Blackb. 
Elytra nowhere deeply infuscated .. ' . pallidus Baly. 
Megasceloides pallidus Baly (formerly Ocnus), 
M. pallidus, Jac. 
Both Baly’s and Jacoby’s types were from Nichol Bay 
in North-Western Australia. 
Megasceloides squamosus Baly (formerly Terillus). 
A cotype of this species, sent for examination, is probably 
a male, the basal joint of each of its four front tarsi is 
larger than those of the hind ones, but not very conspicu- 
ously inflated; the fourth segment of its abdomen is the 
length of the third, but much shorter than the fifth, it is 
gently depressed in the middle, with the apex feebly in- 
curved, the fifth has three shallow depressions towards the 
apex, the middle one of which is open posteriorly so that 
the apex is distinctly notched. The antennae are not 
inflated in the middle, but this character appears to be a 
sexual and specific, rather than a generic one. The pro- 
thorax was described as being “impressed, but not very 
closely, with deep round punctures,” these were also 
described as subremote; on the cotype they are decidedly 
dense at the sides, but sparser in the middle, although even 
for these the expression “subremote” would not be 
correct; possibly the character is variable. The tibiae 
are all somewhat produced at the outer apex, but the four 
hind ones are not distinctly notched near the same. 
