70 



at base, becoming tuberculate about the middle, the last three 

 only conical and spiniform, the apical tubercle the largest,, 

 situated on the edge of the declivity; second row with basal 

 tubercles small, but definite, about ten in all, the last four 

 conical, reaching about the same level posteriorly as the first 

 row: third row smaller than in A. adelaidae, eight to ten in 

 number, equal or subequal in size, the last two or three be- 

 coming smaller, and thence degenerating in a row of obsolete 

 granules. Ventral segments subglabrous, with scattered punc- 

 tures : apical ventral segment longitudinally convex, very 

 feebly transversely concave posteriorly, the greater part sub- 

 glabrous, with scattered punctures, the lateral parts with 

 more dense subsetose clothing. Legs simple. 



9 . Broader, more ovate than the male. Elytra with 

 only the last two tubercles of the first row spiniform, the others 

 traceable though small ; second row with eight, third row with 

 seven to eight tubercles. Beneath convex, subglabrous; apical 

 segment with a feeble depression at apex. Dim. — Male, 

 15x6 mm. : female, 15 x 7 mm. 



Hah. — South Australia: Kangaroo Island (J. G. O. 

 Tepper). Closely allied to .4. adelaidae, the differences noted 

 above should readily separate it. Typical specimens of A. 

 adelaidae also occur on the island. 



ACANTHOLOPHUS SIMULATOR, U. Sp. 



<S . Small, elongate. Black; rather sparsely clothed 

 above with minute brownish squames, the elytra feebly 

 maculate with white on the sides and posteriorly : beneath 

 with white, depressed, subsetose clothing; legs with similar 

 clothing. 



nostrum short, broad; the dorsum hardly excavate, the 

 margins raised into a strong conical tubercle above the insertion 

 of the antennae ; oblique ridges hardly raised above the general 

 dorsal surface : the basal foveae deep, open laterally. Head 

 concave in front behind the intercristal ridge, longitudinally, 

 somewhat obsoletely, ridged : the supra-orbital crests conspicu- 

 ous, bicornuate, the two horns arising from a common stem, 

 the anterior directed forwards with a feeble curve upwards, 

 the posterior and larger branch directed upwards with a feeble 

 curve backwards. Prothoray (3 "5 x 3'5 mm.) not greatly" 

 ampliate : the anterior margin slightly produced over the head 

 above, without ocular lobes ; the disc with three narrow trans- 

 verse impressions and with the median line strongly depressed 

 in the middle : median group of tubercles about six in number, 

 the anterior pair cristiform, projecting over head, the other 

 tubercles small, rounded, somewhat irregularly disposed, the 

 subbasal tubercle slightly projecting over the basal impression; 



