BY THE REV. T. BLACKBURN. 811 



I may say that Baron de Chaudoir's description of R. liopleura 

 appears to me faulty in calling the sides of the prothorax " not " 

 sinuate behind, and the 7th elytral stria "altogether obliterated." 

 The former would be better described as "scarcely sinuate," and 

 the latter as " almost oblitei'ated.' I have no doubt of the 

 correctness of this emendation, because the baron states that 

 specimens ticketed F. Australaske in Castelnau's collection (which 

 species Castelnau speaks of as having the sides of the prothorax 

 sinuate behind) are identical with his liopleura ; moreover, 

 Castelnau states that this insect (his F. Australasia, Dej., but, 

 according to Chaudoir, not really that species) is common in South 

 Australia ; and there is a Hhytisternus, the only one common in 

 South Australia, well known to me, which I had purposed 

 describing as new until J noticed this discrepancy between de 

 Chaudoir's and de Castelnau's descriptions, but which T now have 

 no doubt is tlie species that de Chaudoir described as liopleura, 

 and that de Castelnau called Feronia Australasice, Dej., and it has 

 the sides of the prothorax slightly sinuate behind, and the 7th 

 elytral stria, though excessively faint, yet certainly traceable 

 with a good lens. 



I have specimens of the insect described above from the 

 neighbourhood of Adelaide and from Yorke's Peninsula; it 

 appears to be rare. 



Pristokychus Australis, sp.nov. 



Minus convexus ; subnitidus ; niger vel piceo-niger ; antennis 

 palpis tarsisque rufo-piceis ; elytris subcyaneis ; prothorace 

 postice vix angustato, angulis posticis obtusis, subdentiformibus ; 

 elytris striatis, striis subtiliter punctulatis ; tarsis sat brevibus. 



[Long. 7 lines, lat. 2 1 lines. 



The head and prothorax are nitid, the foi'mer with a strong 

 longitudinal sulcus on either side between the eyes. The pro- 

 thorax is about a quarter again as wide as long, the front margin 

 and base nearly equal in width, the former slightly concave, the 

 latter gently bisinuate ; the sides are gently arched in front, and 



