BY W. MACLEAY, ESQ., F.L.S. 327 



Like G. Kreuslerce but of more elongate form. It is of a 

 brilliant black, with the exception of a narrow margin of blue 

 mingled with green on the thorax and elytra ; the latter has a row 

 of rather distant punctures along but not in the lateral margin. 



My specimen was taken at Lake Albert, near Wagga Wagga, 

 last September. 



Gnathoxys punctipennis. 

 Long. 5 lin. 



Niger nitidus, thorace oblongo medio canaliculato, elytris sub- 

 seriatim punctatis apice rugosis, antennis palpis pedibu^que 

 piceo-rufis, tibiis anticis extus bidentatis. 

 The smoothness of the sculpture in this species gives it very 

 much the appeai-ance of a Promecoclerus. Tlie punctu ration on 

 the elytra is not very marked, and the rugosity at the apex is 

 very limited. The upper external tooth on the fore-tibisQ is small 

 and near the middle of the joint. 



My only specimen comes from South Australia. 



The aflSnity of the insect described below is manifestly to 

 Oraspedophorus. 



I propose for the genus the name of 



PLATTLYTRON. 



Mentum transversum profunde emarginatum dente medio lato 



brevi lobis lateralibus rotundatis. 

 Labium corneum parvum truncatum apice bisetosum paraglossia 



adhaerentibus superantibus. 

 Palpi onaxillares longi articulo secundo longo, tertio brevi 



curvato, ultimo securiformi. 

 Palpi labiales valde securiformes. 

 Mandihulce validoo apice acutge arcuatse intus dentatse. 

 Labrum transversum leviter emarginatum. 

 Antennoe filiformes. 



