MESODERES SEXNOTATUS. 67 



Proihorace antice angustiore quam basi , siibelliptico , 

 lateribus regulariter modiceque ciirvato-ampliatis , antice 

 haud excavato . supra convexo , basi in medio leviter im- 

 presso , dorso sparsim punctidato-piloso. 



Elytris brevibus , latiorlbus prothorace , basi leviter emar- 

 ginatis , humeris paidlo callosls . apice acuminato , supra 

 convexis, subfornicatis, sulcato-costatis j sulcis impunctatis , 

 interstitiis cosfiformibiis , punctidato -pilosis , suturali basi 

 latiore quam postice , 2° latiore quam seqiientibus , 4° in 

 tertio basali lato , postice attenuato. 



Corpore infra rubro-castaneo , hic et illic plus minusve 

 saturato. Prosterno in medio subimpresso , antice utrinque 

 elevato, subcalloso ; metasterno late — abdomine basi obsolete 

 impresso , segmento apicali foveolato. 



9- Differt corpore paullo breviore sed robustiore , pro- 

 rostro breviore , postice constricto , deinde] rapide fortiterque 

 ampliato ; metasterno canaliculato , haud excavato , segrnentis 

 abdominis basali et apicali convexis , hoc haud foveolato. — 

 Long. cT 7, 9 6'/, mm. 



Bab. Humboldt Bay (Nov. Guinea). 



Two specimens collected by W. Doherty are in the 

 Rothschild Museum at Tring. 



Whenever the indication of the specimens »male" and 

 »female", based upon an examination of the metasternum 

 and abdomen, is not erroneous, this species is worthy of 

 note also for its rostral dimorphism. In the male the pro- 

 rostrum is longer, much curved, slightly enlarged from 

 its rise till the tip ; in the female on the contrary the 

 prorostrum is shorter, more curved , and more rapidly and 

 conspicuously enlarged at the tip. 



Mesoderes maculatas , n. sp. 

 Hellodius maculatus Power iu litt. 



Rubro-brunneus , nitidus , pilosus , femorum pedunculis et 

 apice obscurioribus , elytris ferrugineo notatis , fascia trans- 

 versa mediana obsoleta brunnescente. 



Notes from the Ljeyden JVluLseum, Vol. XXI. 



