648 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



3 basal joints glabrous, 1st thick, 2nd very short, 3rd nearly twice the 

 length of 2nd. Prothorax short, broad (2^ x 3 mm.), not convex, 

 truncate behind, broadest about the middle ; the sides strongly 

 rounded ; anterior angles rounded ; basal angles prominent, 

 subdentiform ; border rather strongly and equally reflexed, very 

 shortly sinuate in front to basal angles, extending along anterior 

 margin on each side, but not crossing the middle, fine, but entire, 

 on the base ; median line lightly marked ; a wide irregular 

 impression on each side of the base ; two marginal set89 on each 

 side, the anterior one at the broadest part, the posterior one on 

 the border at the basal angles. Elytra broadly oval (5 x 3| mm.), 

 subconvex, declivous behind, vertical on the sides, strongly 

 striate; doi'sal interstices equal, convex; striae crenulate, 1-6 

 on dorsal surface, 7th obsolete, 8th (the marginal stria) strongly 

 punctate along its course ; the space (about the width of 

 2 interstices) between the 6th and 7th striae smooth and ver- 

 tical on the sides, becoming carinate behind, and reaching the 

 apex ; base truncate, declivous, appearing slightly emarginate 

 between the shoulders, the basal border sinuate behind and 

 terminating in a short tooth at the shoulders ; lateral border 

 reflexed, more widely so in front, sinuate behind. Scutellum 

 small, triangular; no abbreviated subscutellar stria. Prosternum 

 not excavated between the coxa?; metasternal epimera not reaching 

 the coxse. Ventral segments la^vigate, 3 last convex, deeply divided 

 from one another. Tarsi short ; the joints slightly dilatate in the 

 male, but not spongiose below ; posterior coxae contiguous. 



Length 9, breadth 3|mm. 



Hah. — Dunoon, Richmond River (R. Helms, April, 1890.) 



In the present state of our knowledge of the Australian Feronini 

 a new genus is needful for a large Feronid in the Australian 

 Museum, labelled " Wide Bay Queensland." It will come between 

 Nurus and Mecynognathus, as represented by Homalosoma dilati- 

 ceps, Chaud. I would here note that I am not at all sure that 

 Homalosoma dilaticeps, Chaud., is congeneric with Mecynognatkus 



