196 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



the strise fine, the four first strongly impressed, obliterate near the 

 apex ; the sides from the fourth stria with only faint traces of 

 striae. Three last ventral segments deeply foveate on each side ; 

 a well marked trans vei'se impression extending from the fovese 

 towards the middle of the segments. Four first joints of anterior 

 tarsi dilatate and spongiose below ; middle tarsi with two first 

 joints spongiose, last joint of the tarsi flat above and broad towards 

 the base. 



Length 1 4, breadth 4| mm. 



Hah. — Bombala ; two specimens (J") in Australian Museum. 

 I am not quite satisfied that my identification of P. neglecius, 

 Casteln., is correct ; however this species agrees very well with the 

 description, and a specimen in my collection from Victoria cannot 

 be separated from those in the Australian Museum. 



It is a very dull-coloured and flat insect (being the flattest 

 among the described Australian species) with the posterior angles 

 of the prothorax appearing quite rounded off" when viewed from 

 above ; the elytra are a little narrowed to the shoulders which 

 are hardly at all marked. It is closely allied to P. olivaceus, 

 Macl., but is a much flatter insect. 



Promecoderus inornatus. 



P. inornatus, Macl. Trans. Ent. Soc. N.S.W. 1873, II. p. 333 ; 

 P. puncticollis, Macl. I.e. p. 333. 



The following are the chief characteristics of this species. 

 ^. — Black, shining, brighter below than above. Head rather 

 small ; the frontal impressions very shallow, extending behind the 

 clypeus ; vertex with a strong transverse impression ; post-ocular 

 prominences large. Prothorax longer than wide (4 x 3| mm.), 

 subconvex, hardly flat on the disc, not the least declivous to the 

 base, widest just behind the anterior marginal punctures, very 

 slightly narrowed behind ; the angles of the base, viewed 

 from above, rounded ofi"; the marginal border not sinuate 

 in front of the basal angles, not reaching the middle of the base ; 

 the basal angles obtuse; median line very light, not reaching 

 the base or the anterior margin. Elytra oval (7i x 4:^ mm."), 



