202 



nearly reach the apex of the basal segment, and are very spar- 

 ingly punctulate. The flattened ridge of tlie prosternum (which , 

 however, is scarcely so much flattened as usual) is parallel-sided. 

 The pubescence scarcely differs from tliat of R. Evansi. 



Port Lincoln; not common. An abraded specimen from near 

 Lake Eyre seems to be identical, but its condition will not allow 

 of certainty. 



R. Lindi, sp. nov. Ovalis ; sat convexus ; pubescens ; sat 



nitidus ; piceus, antennis, palpis, corpore subtus, pedibusque, 



plus minus rufescentibus ; prothorace quam longiori vix 



duplo latiori, elytris basi vix angustiori, antice vix angustato, 



lateribus subrectis, angulis anticis rotundatis, posticis dis- 



tinctis obtusis ; capite prothoraceque subtilius, elytris magis 



fortiter, sat crebre punctulatis ; metasterno medio subtiliter 



transversim rugato sat distincte punctulato. Long., 1 — 1-i-l. ; 



lat. 1—1 1. 



The abdominal plates are as in R. insipidus. The flattened 



ridge of the prosternum is strongly narrowed from its base to the 



front, where it is truncate. The pubescence scarcely differs from 



that of R. Evansi. Nearest to R. insi2ndus, from which its 



puncturation, though not quite so strong, scarcely distinguishes 



it. It is, however, a wider and shorter insect, more strongly 



rounded on the sides, differently coloured, and especially with the 



prosternal ridge wider and truncate in front. It is smaller, very 



much more feebly punctured, and more obscurely coloured than 



R. Evansi, and dififers from R. debilis, inter alia, in its stronger 



puncturation and prosternal ridge narrowed to the front. 



Port Lincoln. 



R. ruficollis, sp. nov. Ovalis ; sat convexus ; pubescens ; nitidus ; 



subtus f errugineus ; capite, prothorace, pedibusque Isete ruffs ; 



prothorace quam longiori paullo minus duplo latiori, elytris 



basi vix angustiori, antice parum angustato, lateribus parum 



arcuatis, angulis anticis rotundatis, posticis subrectis ; capite 



prothoraceque subf ortiter, elytris paulo magis fortiter- minus 



crebre punctulatis ; metasterno medio transversim rugato 



subfortiter punctulato. Long., 1-^-1. ; lat., ^1. 



The abdominal plates are about three-fourths the length of the 



basal segment, and are punctured much more strongly and 



sparsely than the sides of the segment. The prosternal ridge is 



as in R. insijndus. The pubescence resembles that of R. Evansi, 



but the longer erect hairs are even longer and stouter than in 



that species. 



Yery differently coloured from all the preceding, and dis- 

 tinguished from all but R. insipidus by the sharply-pointed pro- 

 sternal ridge. From the latter it differs in the pubescence, the 



