710 REVISION OF THE AMYCTERIDES, iv., 



a subcontinuous row ; in other specimens, almost obsolete. 

 Apical segment with the median channel rather shallow, bounded 

 on either side, posteriorly, by a small tubercle. Anterior tarsi 

 with the third, and to a less extent the second, joint asym- 

 metrically dilatate internally, spongiose beneath. 



9. Elongate-ovate. Head, rostrum, and prothorax as in the 

 male, except that the prothorax is slightly less dilatate. Elytra 

 more strongly rounded on the sides, base moderately and gently 

 emarginate; each elytron much produced at apex, and separately 

 mucronate; sculpture much as described in the male. Under- 

 surface convex; apical segment with a shallow median impres- 

 sion, deepened posteriorly, the borders here raised into a short 

 tubercle; apical margin not bisinuate. Dimensions: (J, 14x5; 

 9, 15 X 6 mm. 



Hah. — Tasmania; Victoria; South Australia. 



After careful examination of many specimens, I have come to 

 the conclusion that S. Howitti Macl., and *S'. asper MacL, cannot 

 be separated from *S'. tristis Boisd. I am inclined to think that 

 two species are included under S. asper, the male approaching 

 closely to S. sordidus, while the female is certainly the same as 

 S. tristis. The males of *S'. tristis and ;S'. sordidus are very 

 similar, but the two species are readily separable by the females. 

 As the females are sometimes more easy to determine than the 

 males, the following short table of the females of the allied species 

 may be of service : — 



A. Apical ventral segment tuberculate ^S*. tristis Boiad. 



AA. Apical segment not tuberculate. 



B. Apical margin not strongly bisinuate S. sordidus Macl. 



BB. Apical margin strongly bisinuate S. obliteratus Macl.; 



S. inornatus Ferg. 



SCLERORINUS OBLITERATUS Macl. 



Macleay, loc. cit., p. 255. 



5. Elongate-ovate, rather strongly produced at apex. Black; 

 clothed rather densely with dingy brown subpubescence; setae 

 dark. 



