Australian and Tasmanian Ilalacoderniiclae. 143 

 Heteromastix discoflavus, n. sp. 



(J. Of a smoky-brown, varying to blackish -brown on head and 

 sides of prothorax ; greater portion of prothorax flavous ; elytra 

 obscure flavous ; a wide median and a narrow lateral space darker. 



Head wide and indistinctly punctate. Antennae long and thin, 

 11th joint longer than 10th. Prothorax twice as wide as long, disc 

 rather more convex than usual. Elytra densely and coarsely 

 punctate throughout. Penultimate segment of abdomen semi- 

 circularly excised to base. 



Length 3| ( ? 4|) mm. 



$ . Difi"ers in being larger, with narrower head and shorter and 

 stouter antennae (those of the male being slightly longer than the 

 body, whilst in the female they are distinctly shorter), legs shorter 

 and abdomen simple. 



Uab. Tasmania (types in Aug. Simson's collection). 



The elytral colours are not sharply defined, the darker 

 portions being of the nature of stains. In the male the 

 sides of the prothorax are more reflexed than usual and 

 almost perfectly parallel, so that the segment itself appears 

 to be transversely oblong ; in the female the sides are 

 almost regularly rounded. The elytral punctures are 

 coarser than in any other species known to me ; on the 

 male they are almost seriate in arrangement, but on the 

 female exhibit a strong tendency to become confluent and 

 rugose. 



Heteromastix occidentalis, n. sp. 



(J . Black, prothorax flavous. 



Head wide and indistinctly punctate. Antennae long and thin, 

 11th joint scarcely longer than 10th. Prothorax scarcely twice as 

 wide as long, sides thickened and inflated in the middle. Elytra 

 very densely and rugosely but not coarsely punctate ; with numerous 

 feeble transverse ridges. Penultimate segment of abdomen widely 

 semicircularly excised. 



Length 4-5| mm. 



9 . Differs in being larger and wider, with distinctly shorter 

 antennae and simple abdomen. 



Hab. W. Australia : Swan and Vasse Rivers {A. M. 



Lea). 



From some directions, especially in the females, the 

 elytra appear to be covered with minute granules, but this 



