330 NEW SPECIES OF AMYCTERIDJi}, 



The large long semidentated tubercle, which forms the first 

 of a row on each side of the medial line of the thorax, is the 

 most distinctive feature in this species. The crest is like 

 that of A. hypoleucus, consisting of two acute connate spines, the 

 posterior one being long and curved backwards. The elytra are 

 granulated, and have each three rows of tubercles, in the first 

 row the posterior tubercles only are of any size, in the second 

 row they are all rather large, in the third, which have only four 

 or five tubercles, the humeral ones are the largest. The sides 

 are whitish, and the whole upper surface is slightly dusted with 

 scales of the same hue. 



ACANTHOLOPHUS TRIBULUS. 



Oblongo-elHpticus niger fusco-squamosus albido-vittatus, fronte 

 subplana inter oculos utrinque spinis duabus connatis armata 

 spina posteriori sublonga valde arcuata, thorace dorso 

 bifariam tuberculato tuberculis subparvis obtusis lateribus 

 trideutato, elytris subconvexis seriatim granulatis trifariam 

 tuberculatis tuberculis validis conicis, corpore subtus pedi- 

 busque leviter albo-squamosis. 

 Long. 5 lin., lat. 2 lin, 

 Hab. Port Lincoln. 

 This insect seems to approach nearest to A. hystrix, but it 

 wants the long spines and arched appearance of that species. 

 The crest is formed of two connate spines, the hinder one being 

 long and much curved backwards. The tubercles on the sides 

 of the thorax are acute, while those on the back are obtuse. The 

 elytra are granulated with three rows of rather strong conical 

 tubercles on each. The sides and medial line of the thoi^ax are 

 covered with white scales, and thei'e are some lateral spots, and 

 an interrupted vitta of the same on each elytron. 



ACAXTHOLOPHDS CONVEXIUSCDLUS, 



Oblongo-ellipticus niger fusco-squamosus, fronte postice bitu- 

 berculata tuberculis parvis inter oculos utrinque tuberculo 

 obtuso armata, thorace rugoso bifariam tuberculato tuber- 

 culis obtusis irregularibus lateribus medio tuberculato. 



