BY THE REV. T. BLACKBURN. 577 



of that section, — and indeed of any section, — excej^t A. Frank- 

 linensis, Blackb., the present species is at once distinguishable by 

 the spine over the eye being trifid. From A. Franklinensis the 

 different armature of its elytra and the 5 brilliant silvery white 

 vittse (the lateral 2 very close together and somewhat coalescing, 

 the next before them defined sharply only in its posterior half, 

 and only the sutural and the marginal ones quite reaching the apex) 

 are inter alia good distinctions. The closely set shining tubercles 

 on the elytra run in double rows which are well defined except 

 among the rows of large spiniform tubercles where they become 

 sinuous and here and there run into each other. 



Yilgarn, W. Australia : sent to me by C. Fi-ench, Esq. 



DiALEPTOPUS VALIDUS, Sp.nOV. 



Sat robustus ; piceus, induraento cinereo tectus ; rostro per- 

 brevi transverso in medio late profunde sulcato ; antennis 

 crassis, scapo extrorsum fortiter incrassato, brevi (quam 

 tarsorum anticorum articulus 4"^multo breviori), funiculi artic- 

 ulis 1° et 2° ceteris vix lougioribus ; prothorace apice bilobo, 

 lateribus sat I'otundatis ; elytris prothorace paullo latioiibus, 

 tuberculis magnis extrorsum inclinatis (in elytro singulo 6, 

 biseriatim positis) armatis, inter hjec dorso sat crebre granulis 

 foveisque ruguloso, lateribus crassissime reticulato-foveolatis, 

 latitudine trans processus humerales quam trans prothoracem 

 haud minoi'i. 



[Maris (?) long. 6, lat. 2? lines ; feminse (?) long. 8, 

 lat. 3| lines. [The width is measured across opposite 

 tubercles.] 



The humeral processes of the elytra bulge out so much laterally 

 that the width of the insect across them is quite equal to (in the 

 male) or a little greater than (in the female) the greatest width 

 across the prothorax ; in all the previously named species known 

 to me the width across these processes is much less than the 

 greatest width of the prothorax. The elytral tubercles being only 

 three in each row and being very little elevated upward, but 



