428 STUDIES IS AUSTRALIAN ENTOMOLOGY, 



at their summit ; in Sarticus the}^ are never marked. Tlie 

 unipunctate third el3^tral interstice is a remarkable feature in an 

 Australian Feronide with the scutellar stride at the base of the 

 first interstice. 



NoTOLESTUs, n.gen. 



This is a new genus proposed for the reception of Abax 

 svlcijjennis, Macl. The single specimen in my possession was 

 Ijrought by Mr. J. H. Maiden from the Don Dorrigo scrub, near 

 the Bellinger River, N.S.W., and is in an imperfect condition, so 

 that I can only indicate some of its most striking features in the 

 following brief diagnosis. It appears a completely isolated 

 form. 



Colour of upper surface entirely cupreous. Head trans\ersely 

 impressed across vertex ; front strongly bi-impressed, the impres- 

 sions divergent backwards. Mandibles short, stout. Labrum 

 transverse, lightly and widely emarginate. Prothorax depressed, 

 transverse, with wide lateral margins ; lateral border thick ; 

 two basal impressions on each side. Elytra lightly convex ; 

 dorsal surface of each elytron with two wide channels, a narrow 

 I'idge at bottom of each of these channels (being the second and 

 fourth interstices) ; abbreviated scutellar striole wanting ; third 

 interstice with two widely separated punctures on posterior half, 

 fifth interstice very wide, extending to the marginal sti'ia ; 

 shoulders rounded ; basal border wide, forming a strong short 

 prominence at each humeral angle ; margin very strongly sinuate 

 on each side of apex ; a strong internal plica joining the margin 

 on each side behind the sinuosity of the apical curve. Ventral 

 segments not transversely sulcate (apical segment wanting in my 

 specimen). Male with three basal joints of anterior tarsi dilatate 

 and squamulose l^eneath. 



Genus Prosopogmus. 



I have found it impossible to maintain de Chaudoir's genera 

 Ceneus and OphryGsterims distinct from Prosopogmus. It seems 

 necessary to accept Prosopogmus as the name of the genus, it 



