180 



closer than in any other Australian Heterocerus known to me 

 except that mentioned above as possibly H. Australasice^ Waterh , 

 in which the puncturation is somewhat closer and correspond- 

 ingly finer but not at all asperate. The small number of spines 

 on the front tibi?e is constant in the five specimens that I have 

 seen and is certainly a reliable character. The clypeal processes 

 of the male are larger than in the other species of which I know 

 the male with certainty except H. largsensis, Blackb. They 

 have somewhat, the appearance of small compressed laminae pro- 

 jecting from the front of the clypeus with their front face vertical 

 and their upper outline forming an exact right angle with their 

 front outline — viewed from the side — but not actually toothed. 

 As, however, with sexual characters of this description in many 

 other insects, there is a certain degree of variability in the size 

 and sharpness of outline in this structure. The dark markings 

 on the elytra (fairly constant on the specimens examined) are — 

 one round the scutellum, two between the scutellum and the 

 lateral margin (these, confluent on the base), a transverse median 

 irregular (in some examples interrupted) blotch, and a zig-zagged 

 transverse post-median blotch which is connected at its inner 

 extremity with the inner extremity of the median blotch by a 

 subsutural line. 



Central Australia. 



H. vudtimaculatus, Blackb. The type of this insect which is 

 still unique is apparently a female ; its clypeus resembles that of 

 the female of H. debilipes, Blackb., from which it dififers by its 

 larger size, different markings, much less close elytral punctura- 

 tion, more elongate form — with elytra narrowed behind the 

 shoulders — and more numerous tibial spines. In my. description 

 of it I called the puncturation of its elytra " much" closer than 

 in H. Flindersi, Blackb.; but I think the phrase was somewhat 

 too strong, and "evidently" should be substituted for "much." 



H. Flindersi, Blackb. The type of this insect is a female. I 

 have subsequently found the male, the sexual characters of 

 which have been indicated above under the heading of 

 H. largsensis, Blackb., and also in the tabulation. In my experi- 

 ence the commonest and most widely distributed Australian 

 Heterocerus. 



H. indistinctus, Blackb. The sexual male characters of this 

 species are indicated above under the heading of B. largsensis, 

 Blackb., and also in the tabulation. 



H. Victories, Blackb. My two examples of this insect appear 

 to be females. The clypeus is widely and decidedly emarginate 

 in front and the labrum only feebly convex. The markings of 

 the elytra are very distinct from those of the other Australian 

 Heteroceri known to me. 



