248 



and two on the second ; the spurs to its hind tibiae are similar 

 to those of flavicans, except that the longer one is not quite 

 twice the length of the other. In general appearance it is 

 like an enlarged specimen of longipes, but on that species the 

 black ridges on the hind tarsi are two in number on the first 

 joint and one on the second. 



MORDELLISTENA TIBIALIS, n. Sp. 



Castaneous, parts of appendages somewhat paler. 



Long and rather thin. Scutellum small and semicircular. 

 Pygidium (for the genus) rather short and somewhat obtusely 

 tipped. Antennae long and thin. Hind tibiae with spurs 

 of unequal length, with five oblique black ridges, basal joint 

 of hind tarsi with four, second with three, third with two 

 ridges. Length, 4§-5 mm. 



Hab. — North-western Australia: Fortescue River (W. D. 

 Dodd) ; New South Wales: Sydney (Macleay Museum). 

 Type, I. 5948. 



In general appearance close to austrina, but distinguished 

 from that, as from all the other dingy species, by the hind 

 tibiae having five oblique ridges; of these the sub-basal one 

 is short and the subapical one is so close to the apex that it 

 needs to be looked for, but from some directions all five are 

 sufficiently distinct, the three median ones are considerably 

 shorter than in austrina. The pubescence is extremely short, 

 and has a vague silken appearance; on the shoulders and 

 suture it is slightly paler than elsewhere, on the rest of the 

 elytra in certain lights it has a feeble purplish gloss ; on the 

 head it appears to be parted in the middle. A single specimen 

 was seen from each locality. 



MORDELLISTENA ABACETA, n. Sp. 



Piceous-brown, almost black; sides of prothorax and of 

 elytra, muzzle, parts of under-surface, and hind legs paler, 

 antennae and four front legs still paler. Pubescence of a 

 uniform silken-grey. 



Shape much as in preceding species, but pygidium some- 

 what longer and thinner. Antennae long and thin. Hind 

 tibiae with spurs very unequal, with four oblique black ridges ; 

 basal joint of hind tarsi with three, the two following joints 

 each with two ridges. Length, 3| mm. 



Hab. — Queensland: Cairns district (A. M. Lea). Type 

 (unique), I. 5950. 



A small dark species, in general appearance very close 

 to some forms of austrina (especially Var. 4), but with four 

 ridges on the hind tibiae. The elytra (including their 

 pubescence) when viewed directly from behind appear to be 



