48 REVISION OF THE SUBFAMILY TENEBRIONINJE, 



6. First two striae shallow, punctures ver}^ small or obsolete 



tenuialriata Bates. 



7(n)Elytra more or less striate, intervals flat. 



S.Pronotum and elytral intervals clearly punctate.. pimcticollis, n.sp. 



9(ll)Pronotuin and elytral intervals scarcely visibly punctate. 



10. J'rothorax arcuate in front, anterior angles advanced orcus Pasc. 



ll.Prothorax truncate in front, anterior angles not advanced 



ampliala Bates. 



12(22)Elytra seriate-punctate. 

 13(15)Elytral punctures alveolate. 



14. Apex of prothorax bisinuate, lateral borders thick and crenulate 



Deyrollti Bates. 



15. Apex of prothorax truncate, lateral borders less thick and scarcely 



crenulate /oveata, n.sp. 



16(22) Elytral punctures much smaller. 

 17(19)Size large (17-2;^ mm. long). 



18. Colour subopaque black, seriate punctures smaller interioris Blackb. 



IQ.Colour nitidblack, seriate punctures larger.. .. marginata Bates; 



sinnaticollis Bates; e^mcicoUis Macl. 

 20(22)Size small (12-15 nmi. long). 



21. Prothorax with lateral channel tarda Bates. 



22. Prothorax without lateral channel opacula Bates. 



Nyctohates and Setenis are not represented in the Australian 

 fauna, the former being limited to America. It is possible that 

 Promethis [Nyctohates) sterrha OIL, from Lord Howe Island, is 

 a Setenis, but I am not able to state this definitely, through lack 

 of knowledge of the genus. Under Setenis, Herr Gebien has 

 included two of Boisduval's mysteries, Upis crenata Boisd., and 

 U. Lottinii Boisd. These will be discussed below. Having 

 examined the types of Meneristes curtulus Oil., and M. vulgaris 

 OIL, from Lord Howe Island, I should unhesitatingly place them 

 under Hydissus, the larger species {M. vulgaris) being extremely 

 close to H, ferouioides Pasc. The species may be distinguished 

 as follows : — 



Hydissus Pasc. 



l.Pronotum smooth, elytral intervals strongl}' convex, seriate punctures 

 evident .fe7-onioidesFa.sc. 



2. Pronotum finely punctate, elytral intervals little raised, seriate punc- 



tures very small, almost hidden in striae vidgaris Oil. 



3. Pronotum more strongly punctate, elytral intervals flat, seriate punctures 



larger than in 2 (also shorter and wider) curtidus Oil. 



