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and rostrum, the scales are white. The elytral markings are- 

 suggestive of those of Ophryota squamibunda. On abrasion 

 the under-surface is seen to be densely covered with small 

 punctures, with considerably larger ones (partially visible 

 beforehand) scattered about. 



Ophryota squamibunda, Pasc. 



Although not mentioned in the original description, there 

 is a subtubercular lobe beneath each eye of this species, and 

 this appears to be a permanent generic feature. Of the 

 numerous specimens before me, some of which agree well with 

 the described markings of the type, some bear the late Rev. 

 T. Blackburn's name label, and others were received with the 

 name from the late G. Masters (from whom the type was 

 received). The markings, however, are often traceable with 

 difficulty, and are sometimes altogether absent. 



Several specimens with the typical markings agree per- 

 fectly in all details with the described form, except that they 

 have a small but distinct tubercle on each shoulder ; the 

 resemblance in all other details is so exact that they probably 

 represent the other sex. 



Ophryota nodosa, Blackb. (formerly Aparete). 



In describing Aparete nodosa, Blackburn was evidently 

 somewhat dubious as to its genus. The type is now before 

 me, and it has a distinct subtubercular lobe beneath each 

 eye, as on Ophryota squamibunda , and it certainly is con- 

 generic with that species. Its head and rostrum are identical 

 with those of squamibunda . The only structural differences 

 I can find between it and specimens of squamibunda with 

 tuberculate shoulders are on the interstices; the third on each 

 elytron having two distinct tubercles, and the fifth having 

 three, in each case the second of these being the larger, and 

 crowning the posterior declivity; the one before it, although 

 smaller, is quite distinct and fairly acute ; whereas on squami- 

 bunda there is but a slight swelling at its position. 



Two specimens from Alice Springs appear to belong to- 

 the species, and are in better condition and slightly larger 

 than the type ; they have markings somewhat as on squami- 

 bunda. The scales generally are of a dingy-white or 

 stramineous; the darker ones being of a rusty colour, in places 

 becoming sooty. Two other specimens from the Darling 

 River and Sea Lake also appear to belong to the species, but 

 are rather smaller. All these specimens vary somewhat in the 

 markings and in the stout erect scales, but these appear to be 

 easily abraded. 



