58 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



punctures along margin, very thinly placed on anterior part, much 

 more closely on apical third. Anterior thighs short, dilatate in 

 middle, lower side strongly and obtusely produced. 



Length 18, breadth 6 mm. 



Hah. — Tasmania. 



Lychnus striatulus, Bates. 



L. striatulus, Bates, I.e. p. 318. 



To render my notes complete I append Mr. Bates's description 

 of this species, which is unknown to me. 



"L.strangulato simillimo,differt tantum statura minori elytrisque 

 distinctius striatis interstitiis convexis. Niger, minus nitidus ; 

 elytris oblongo-ovatis, paullo angustioribus et supra minus planatis. 

 Long. 17 mm. (J." 



" Differs from L. strangulatus only in being smaller, propor- 

 tionately narrower, and in the elytra being more distinctly striated, 

 or rather the feebly or not at all incised stride are separated by 

 convex interstices. The strise have no traces of puncturation. 

 In its narrower, more oblong and convex form it resembles the 

 9 of L. strangulatus more than the $ ; but both the specimens 

 before me are clearly males, having the broad, subdentiform 

 dilatation of the undersurface of the anterior tibiae [query 

 femora ?]." 



"Central Tasmania (Simson). Coll. A. Fry and H. W, Bates. 

 Mr. Janson has a third example." 



Genus Percosoma, Schaum. 



The type is P. carenoides, White, a well-known Tasmanian 

 species. The species I associate in this genus fall naturally into 

 two groups, the Australian and the Tasmanian ; the former differ 

 greatly from the latter, though not sufficiently, I think, to warrant 

 the formation of a genus for their reception. Of the two 

 Australian species as yet recorded, I only know both sexes of 

 P. montanum, Casteln., and in this species the $ has the anterior 

 thighs with a strong dentiform projection on the lower side as in 

 Lychnus. 



