' CHRYSOMELIDZ. 425 
Head densely and between the eyes coarsely punctate ; 
median line distinctly impressed in front. Prothorax with 
dense clearly-cut punctures; basal lobe feebly notched. 
Elytra indistinctly seriate-punctate, sides tristriate, imner 
stria distinct only on apical half; interstices very finely 
rugulose. Length 34mm. 
Hiab.—W.A.: Rottnest Island. 
A specimen differs in having the legs (except apex of 
tibiez) and the tarsi black. 
DITROPIDUS C@LESTIS, N.sp. 
Briefly oblong-ovate; steely-blue; the elytra with pur- 
plish reflections; palpi, antennz (except at apex), extreme 
apex of tibie, and apical joints of tarsi obscure red. 
Head densely punctate ; median line deeply impressed in 
middle. Prothorax with dense, round, clearly-cut punctures, 
nowhere elongate .or confluent; basal lobe entire, Elytra 
seriate-punctate, sides on apical half tristriate; imterstices 
faintly rugulose. Length 44mm. 
Hab.—--W.A.: Geraldton. 
The elytral punctures are very distinct, and there are 
frequently a few in the vicinity of the regular series, so 
that these in places appear to be somewhat irregular; the 
punctures of the prothorax are remarkably uniform. The 
species resembles the blue variety of concolor to a certain 
extent, but may be at once distinguished by its punctures. 
DITROPIDUS VIGILANS, n.sp. 
Very briefly ovate; blue; the prothorax with a feeble 
greenish gloss; the elytra, under-surface, and legs somewhat 
purplish ; labium, palpi, and basal part of antenne obscure 
testaceous. 
Head sparsely punctate; eyes large, and very much closer 
together than is usual. Prothorax with very small and in- 
distinct punctures; basal lobe entire. Elytra seriate- 
punctate, the punctures rather strong, sides tristriate ; inter- 
stices impunctate. Length 2?mm. 
Hab,—N.S.W.: Tweed River. 
The eyes are much larger and more approximate than is 
usual, and this (combined with the colour) should render 
the species (which to a certain extent resembles many of the 
Saprini) very distinct. . Quite possibly, had this species been 
before Dr. Chapins, he would have referred it to Cenobius ; 
it seems, in fact, fairly close to his C. lucidulus, but differs 
in being larger, upper-surface almost uniformly coloured, 
legs darker, scutellum without basal notch, &c. 
