BY ROWLAND E. TURNER. 227 



rugulose. There is a deep depression at the base of the antennae, 

 and a median sulca on the prominence between the antennae. 

 The head is punctured, not narrowed posteriorly. The thorax is 

 smooth with a very few fine and scattered punctures; the prothorax 

 as wide as the head; the scutellum very prominent, its sides and 

 the postscutellum finely ])unctured and pubescent. Median 

 segment smooth, vertically truncate posteriorly. Abdomen 

 shining, with large shallow punctures, very sparse on the basal 

 segments. First segment truncate at the base, subtubercular 

 above the truncation. Second segment with a tubercle at the 

 base beneath. Epipygium coarsely punctured, carinated in the 

 middle on the apical portion, depressed and slightly produced at 

 the apical margin, with sparse fulvous pubescence. Shining 

 black; tarsi fuscous, spines and ungues ferruginous. Wings 

 fuscous, lighter at apex, brilliantly glossed with purple. Length 

 25 mm. 



^. Instead of the sulca? from the eye to the occiput usual in 

 the genus there is a broad longitudinal depression. The clypeus 

 has a median carina. 



Bab.— ls.W. Australia (Smith); Townsville, Q. (Dodd). 



I his seems to be a rare species. 



R. NEPTUNUS, n.sp. 



^. Head shining, sparsely punctured, more densely above the 

 base of the antennae; a median frontal sulca from just below the 

 anterior ocellus to the base of the clypeus; clypeus narrow, sub- 

 triangular, broadly emarginate anteriorl}^ Antennee very short. 

 Thorax highly polished with a few scattered punctures, the pro- 

 thorax as broad as the head, emarginate in the middle anteriorly; 

 the impressed longitudinal lines on the sides of the mesothorax 

 shallow as in R. Jcevigatus Sm.; the scutellum raised, subtri- 

 angular, without punctures; median segment short, vertically 

 truncate, with a few scattered punctures. First abdominal seg- 

 ment obliquely truncate anteriorly. All the segments sparsely 

 punctured, except the epipygium, which is deeply and coarsely 

 punctured. Segments 2-6 with a depressed transverse line neai- 



