BY THE REV. T. BLACKBURN. 737 



and the dorsal channel continued to the base, it is more narrowed 

 towards the front ; the inner longitudinal impression on either 

 side at the base is longer and more sharply defined and the outer one 

 quite or almost obliterated ; the concavity of the basal outline is 

 much wider, the sides of the base, moreover, not being at all 

 directed obliquely hindward as well as inward from the basal angles 

 (as they are in Fortnumi) ; the elytra have much stronger striation 

 and the lateral interstices become near the apex linear convex 

 ridges ; the abbreviated stria near the scutellum is much longer 

 than in S. Fortnumi, reaching almost to the sutural stria. The- 

 elytra a little behind the middle are slightly wider than at the base. 

 Port Lincoln. 



SlMODONTUS MURRAYE»SIS, sp.nOV. 



Angustus ; piceus ; capite prothoraceque obscure rufis (huic 

 nonnullis exemplis marginibus rufo-testaceis), antennis pal pis pedi- 

 busque rufis ; prothorace quam longiori tertia parte latiori, postice 

 quam antice fere tertia parte latiori, margine antico sat concavo^ 

 lateribus leviter arcuatis, latitudine majori ante medium posita,. 

 angulis anticis prominulis posticis fere rectis, basi late rotundatim 

 emarginata, striola basali externa distincta ; elytris basi externa 

 minute dentatis, sat fortiter striatis, interstitiis externis postice 

 sat angustis subconvexis, interstitio 3° tripunctulato. 



[Long. 3^, lat. 1}^ lines. 



This species differs from S. Fortnumi, Cast., in most respects in 

 which S. australis differs from it ; instead however of the external 

 longitudinal impression at the base of the prothorax being obli- 

 terated or nearly so that impression is much better defined than 

 in S. Fortnumi, and the concavity of outline of the base of the 

 prothorax is almost evenly continuous from one hind angle to the 

 other ; the striation of the elytra moreover is not much stronger 

 than in Fortnumi, but the lateral interstices are narrower and 

 somewhat convex near the apex (less so however than in S. aus- 

 tralis), while the elytra instead of being somewhat dilated behind 

 the middle are at their widest very little behind the front whence 

 they narrow continuously (though very slightly and gradually). 



