BY W. MACLEAY, JUN., ESQ. 267 



dentibus acutis seriatim ai'matis lateribus seriatim nodu- 

 losis medioque linea tuberculorum subduplici instructo." 

 MacLeay. 



Long. 14 lin., lat. 5 lin. 

 Hab. New Holland. 



This insect is one out of many remarkable insects described 

 by Mr. MacLeay in the year 1826, and published as an appendix 

 to the late Admiral King's Intertropical Survey of the Coasts of 

 Australia. And yet I do not find that Schonherr or Boisduval, 

 or, indeed, any subsequent writer makes the slightest allusion to 

 it. It may be that they were ignorant of the existence of a 

 work which contained descriptions of nearly 100 species of 

 Australian Annulosa by a well-known naturalist. At all events, 

 whatever the reason, they have in two instances in the present 

 sub-family completely passed over species described by Mr. 

 MacLeay. The first instance is that of Psalidura Kirhyi, MacL., 

 before alluded to. In both that and the present instance I can 

 be under no mistake, as the identical insects originally described 

 are in the late Mr. MacLeay's collection, now in my posses- 

 sion. This species is, probably the largest of the genus, my 

 only specimen, a male, being quite as large as the female of 

 Am. ScJionherri. 



The rostrum is as broad as the head, but not quite so long ; it is 

 emarginated in front, has a triangular impression on the fore part 

 of the upper surface, behind which there are two broad oblique 

 elevations, behind which again there is a rather deep groove. 

 The sides of the rostrum are elevated and extend to the vertex, 

 enclosing the excavated space on the head, in the centre of which 

 there is a slight ridge which widens considerably posteriorly. 

 The thorax is truncate in front and behind, and very much 

 widened in the middle. The anterior margin has a series of 

 small oval tubercles, the posterior of still smaller ones. There is 

 also a row of four large round tubercles on each side of the 

 medial line, which is broad and smooth, and the sides, which are 

 flat and dilated, have each six large teeth. The elytra are nearly 

 pai'allel sided, and not broader than the thorax. They are 

 coarsely granulate on the back, with three rows of very strong 



