BY W. MACLEAY, JUN., ESQ. 245 



front, but it has very little of the generic character. Schonherr 

 suggests that this species may be identical with the Amycterus 

 scaher of Boisduval, but certainly the description given by that 

 author could never have led him to such a conclusion. 



Genus SCLERORINUS. 



AntenncB subgraciles. 



Oculi subovati. 



nostrum crassissimum medio carinatum, gula subcrassa. 



Caput subplanum medio plerumque carinatum. 



Thorax plerumque latus planus pone oculos lobatus. 



Corpus subrigidum segmento ultimo abdominali in masculo 



leviter excavatum. 

 Mandihulce, pedes, &c., ut in Psalidura. 



We have in this genus more variety of colouring than in any 

 of the rest of the sub-family. The greater number of the species, 

 and all the more typical ones, are inhabitants of the great basin 

 of the interior which has its outlet in the colony of South 

 Australia. Hence, we find that a majority of the species are 

 marked as South Australian. 



The main feature of the genus is the broad flat rostrum, with 

 a central ridge extending in most cases to the vertex. We have 

 still in this genus the excavated anal ventral segment of the male, 

 but in most instances the excavation is very small. The approach 

 from the last genus to this, is to be found among the Talaurim 

 tuhercidati, and curiously enough it is in the same section of 

 Talaurinus that we find the nearest approach to the next genus 

 Amycterus. 



1. — SCLERORINUS EXILIS. 



Oblongo-ellipticus niger dense cinereo-squamosus, rostro medio 

 leviter carinato utrinque albido-squamoso, thorace sparsim 

 tuberculato tuberculis nitidis hemisphsericis nigro-setigeris 

 antice lobato transversim impresso dorso lateribusque albido- 



