BY ARTHUR M. LEA. 581' 



in having the basal two-fifths of prothorax red; the depression on 

 head hirger and shining; antennte shorter, the 3rd-10th joints, 

 serrate internal!}'. 



TENEBRIONID^. 



Arrhexoplita erecta, n.sp. 



(J. Subparallel, shining; glabrous. Reddish-castaneous, head 

 and prothorax dark reddish-brown, the latter with the margins 

 paler. 



Head scarcely punctate; on each side close to the eyes a short, 

 stout, erect horn; each side of clypeus with a minute elevation;. 

 eyes coarsely faceted. Prothorax strongly transverse, tinel}' 

 punctate, sides margined. Scutellum transversely triangular. 

 EJj/tr I not thrice the length of prothorax, about once and one- 

 half longer than wide; densely punctate. Under surface finely 

 punctate. Legs thin. Length 24, width 1^ mm. 



5. Differs in having a shorter head, a punctate impression in 

 place of each of the horns, and a feebly punctate space liehind 

 the position of clypeal elevations in ^. 



Hah. — Sydney. 



Each of the elytra, when viewed from above, appears to have 

 about nine rows of large rounded dark punctures, but when 

 viewed from the sides these are invisible in most (though not in 

 all) of my specimens. The species differs from A. pygmcea in 

 being larger, not uniformly coloured and brightei', horns of the 

 head shorter, stouter and perfectly erect, less densely punctured, 

 and without the very fine pubescence of that species. 



A D e L I u M. 



The synonymy in this genus and the group it belongs to I 

 believe to be rather extensive, owing to the species being 

 frequently variable in size and puncturation, and their (occa- 

 sionall}') strong sexual distinctions; but while distant from Sydney 

 and the rich collections of the Macleay and Australian Museums 

 and that of Mr. G. Masters, I shall not attempt to elucidate it, as 



