224 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



Promecoderus distinctus, n.sp. 



Black, with a bronzy green tinge on upper surface, and a 

 coppery metallic tinge on the lower surface. Head somewhat 

 flat in front, without a transverse impression across the vertex ; 

 clypeus with a rather rugose impression on each side extending 

 slightly backwards behind the clypeal suture, (tliis distinct) ; the 

 eyes not very prominent, the post-ocular tubercles strong, but not 

 nearly the length of the eyes ; mandibles long, the upper side 

 longitudinally rugose at the sides of the labrum and smooth in 

 front ; labrum without a longitudinal median impression, the 

 angles rounded, very lightly emarginate between them ; mentum 

 with distinct median tooth ; maxillary palpi with the last joint 

 narrowed to the apex. Prothorax a little broader than long, 

 (4^ X 4i mm.) subconvex, a little flattened near the median line, 

 lightly rounded on the sides, widest at about half the length, 

 sliortly narrowed to the base, declivous and transversely impressed 

 behind ; marginal border very narrow, subsinuate befoi'e the 

 basal angles, entire on the base ; basal angles well marked, veiy 

 slightly obtuse ; the median line distinctly impressed, not reaching 

 the anterior margin, but extending to the base, its course crossed 

 by transverse striolse. Elytra broad, obovate (7| x 5i mm.), 

 subconvex, very slightly narrowed at the shoulders ; lightly 

 rounded on the sides, widest just behind the middle, smooth ; two 

 strife next the suture distinct towards the base (with a lens 

 traces of these and others may be seen along the length of 

 the elytra) ; suture lightly impressed ; lateral margins narrow, 

 the usual marginal impressions ; ventral segments deeply 

 foveate on each side. Trochanters long and pointed. 



Length 14-15, breadth 5^ mm. 



Hah. — Magadup, W.A. Two specimens in the Australian 

 Museum. 



A very distinct species ; in general appearance resembling a 

 broad Cerotalis. The long and jjointed trochanters distinguish it 

 at once from all described species of Fromecodertis. The two 

 specimens known to me are in the Australian Museum, and are 



