BY A. RAFFRAY. 193 



emarginato, 7 ($) rhomboidali, magno, convexo, longitudinaliter 

 sulcato. Pedes breves, tarsorum articulis 1° minutissimo, 2 

 magno, subconico, 3 minori cylindrico, ungue siugulo. 



This new genus, which belongs to the tribe of the Bythinini, 

 owing to its large basal ventral segment, resembles Bythinoderes, 

 Reitt., (from Sumatra and Borneo) but differs by the intermediate 

 coxae which are approximate, whilst the posterior ones are much 

 less distant and the first dorsal segment which is larger than the 

 others. It is more closely allied to Sunorfa, Raffr., (from 

 Northern New Guinea) but differs by the first joint of the 

 antennas which is shorter, the shoulders which are dentate with 

 a strong susepipleural sulcus, and the first dorsal segment which 

 is larger. 



The tribe of Bythinini seems to have very few representatives 

 in Australia. The insect described by the Rev. R. L. King 

 under the name of Bythinus impressifrons is not known to me, 

 but it belongs certainly to a totally different genus. I do not 

 think that Bythinus niyer, which also I have not seen, is a true 

 Bythinus. 



Gnesion rufulum, n.sp. 



Totum rufum, sat dense pallide pubescens. Caput leviter 

 transversum, inter oculos foveis duabus et sulcis duobus rectis, 

 brevibus, in sulco frontali transverso desinentibus, lateribus ipsis 

 isto sulco transverso angulatim emarginatis, fronte utrinque 

 supra antennas nodoso, medio depresso; epistomate producto et 

 apice recte truncate Antennas sat elongatae, articulis duobus 

 primis multo majoribus, ovatis et inter se subsequalibus, 3 leviter 

 et breviter obconico, 4-9 moniliformibus, 10 vix latiori, sed leviter 

 transverso, 11 magno, breviter ovato, acuminate Prothorax 

 capite latior, leviter transversus, cordatus, pone medium lateribus 

 fovea laterali emarginatis, ista fovea magna, altera media maxima 

 et valde transversa cum foveis lateralibus obsolete juncta, basi 

 ipsa medio transversim subgibbosa. Elytra subquadrata, basi 

 foveis duabus maximis, oblongis. Metasternum obsolete impres- 

 sum. Pedes breves, femoribus omnibus, prsesertim intermediis, 

 13 



