203 



medial line. Elytra wider than prothorax at base, narrowly 

 oval, or slightly widened behind middle ; striat^-punctate, the 

 seriate punctures small, only obvious on basal half; the striae 

 deep, intervals convex (especially at sides and apex), lightly 

 punctate; uiesosternum strongly and sparsely, abdomen finely 

 punctate. Dim. — 12-13x4-4^ mm. 



Hab. — Northern Territory: Port Essington (type). 

 Western Australia : Champion Bay (British Museum) and 

 Swan River (J. Clark). 



A T any chil US-like insect, of which the red examples (the 

 type is red) are probably immature. It appears to be wide- 

 spread in Western Australia, and bears a superficial re- 

 semblance to the common Homotrysis rufi'pes, F., of Eastern 

 Australia, but has the elytral intervals more convex, and the 

 seriate punctures more hidden in striae, while the head is 

 quite differently shaped, with simple mandibles. It is evi- 

 dently not D. sohrinus, Borch., in which the intervals are 

 quite smooth, and the striae almost vanishing towards the 

 apex; but I consider it most at home under Dimorphochiliis, 

 a genus on the border line between the two main divisions of 

 the family, but belonging rather to the first than to the 

 second of these Divisions. 



Homotrysis (Allecula) nigricans, Hope. 



Elongate-ovate, nitid-black, pilose; edge of clypeus, palpi, 

 and tarsi red. Upper-surface sparsely clad with upright red- 

 dish hair, under-surface with short recumbent pile. 



Head rather strongly and closely punctata, eyes large 

 and prominent, separated by a space equal to half the diameter 

 of one; antennae with joints 3-10 subequal in length, but 6-10 

 successively wider at apex, 11 narrowly ovate. Prothorax 

 a little sinuate (produced in middle) at apex, truncate and 

 widest at base, a little compressed in middle, posterior angles 

 Subacute, sides arcuately narrowed in front; disc coarsely, 

 sparsely punctate, medial line only indicated by an impres- 

 sion at base and a shallow impression near apex ; triangular 

 basal foveae well marked. Elytra very little wider than pro- 

 thorax at base, ovate-elliptic; striate-punctate, the seriate 

 punctures well marked, irregular in size; intervals subconvex, 

 coarsely and sparsely punctate and irregularly transversely 

 rugose. Sternum coarsely, abdomen very finely punctate. 

 Legs very hairy; posterior tarsi with first joint not as long 

 as the rest combined. Ditn . — 9 x 2^ mm. 



Hah. — Northern Territory: Port Essington and Darwin. 



A small, narrow species, nearest to H. fusca, Blackb., 

 but the latter has the elytral intervals flat, with a smaller 

 differently-shaped prothorax inter alia. 



