CHRYSOMELID&, 425 
feeble towards suture; interstices impunctate. Length 
2mm. 
Hab.—N.8.W.: Loftus. 
The colour, corrugations, and shape of the prothorax at 
the base render this species very distinct. The complete 
longitudinal corrugations of the prothorax are seen in the 
following species, but in no other with which I am 
acquainted. 
DITROPIDUS CORRUGATUS, n.sp. 
Very briefly ovate. Head and prothorax coppery; pygi- 
dium and elytra pale testaceous; suture of the latter 
narrowly black, two small black spots on each at base; one 
on humeral callus, and one between it and suture, punctures 
slightly infuscate; under-surface black; palpi, base of an- 
tenn, and parts of tibie obscure testaceous. 
Head and prothorax densely and finely longitudinally cor- 
rugated ; the former with median line very distinct. Pro- 
thorax withafew very indistinct punctures scattered about ; 
basal lobe notched. LElytra seriate-punctate, sides with two 
feeble striz ; interstices densely and very finely transversely 
wrinkled, sides (especially towards base) very indistinctly 
wrinkled. Length 23mm. 
Hab.—Swan River. 
In colour resembling some of the varieties of pictus, but 
the prothorax very differently sculptured. 
DITROPIDUS TARSALIS, N.sp. 
Briefly ovate; head piceous, diluted in front ; prothorax 
and elytra of a peculiar reddish-yellow, the former with a 
large chocolate-brown transverse blotch occupying the 
greater part of the surface, but nowhere touching the 
margins, its base (and base and suture of elytra) narrowly 
biack, punctures more or less infuscate; under-surface 
black ; antennz, knees, anterior tibize (with part of femora), 
and all the tarsi testaceous. 
Head moderately densely punctate; median line strongly 
impressed; eyes rather larger than usual. Prothorax 
sparsely and indistinctly punctate; basal lobe acutely 
notched. Elytra seriate-punctate, sides with two or three 
feeble strie; interstices very indistinctly transversely 
wrinkled. Length 34mm. 
Hab.--N.8.W.: Armidale. 
The elytral punctures are slightly infuscated, otherwise 
they would be invisible; the transverse wrinkles are visible 
only in certain lights (in certain lights there appear to be 
very feeble striz along the lines of punctures). The colour 
