138 ANNALS OF THE QUEENSLAND MUSEUM. 
to this classification. I prefer, therefore, to consider Ospidus as 
an aberrant form of the true Heheides. Be Edylius, its author, 
Champion, referred it to the Pedinides of Lacorclaire, and my 
present ignorance of this group prevents any discussion m to 
the correctness of the proposed change. As regards Byallius, 
Pasooe placed it amongst the Adeliinae as an ally of Atryphodes 
( CardiothorarJ, but this seems to me a mistake, since the form of 
the presternum, the wide intercoxal process, the sculpture of the 
elytra, and shape of the prothorax at once proclaim it as a nearer 
ally of JEtlialides. Thus Ospidus and Edylius have been excluded 
from my list, while Trichosarac/us and Byallius have been retained. 
The group thus contains, according to the present writer, eleven 
existing genera, to which he ventures to add a< new genus, 
Onotrichus. The twelve genera of the Australian Nyctozoilides may 
be tabulated for identification as follows : — 
Table of the Genera of the Nyctozoilides. 
1. (2.) Eyes completely divided \ g 
2. Anterior tarsi dentate on outer edge J °«* I «*goa.inus. 
3. (23.) Eyes not completely divided. 
4. (19.) All tibiae with outer edge entire. 
5. (20.) Mandibles bifid at apex. 
6. (8. ) Submentum with a strong lateral tooth projecting 
vertically. 
7. Form very convex, elytra smooth, sub-obsoletely 1 Onosterrhus.. 
costate, or (rarely) rugose-reticulate ... ... / Hypocilibe. 
8. Form more elongate and depressed, anterior 
angles of prothorax acutely produced ... ... Agasthenes. 
9. (14.) Submentum angulate, scarcely or very shortly 
dentate. 
10. (12.) Form elongate-ovate, convex, sub-parallel. 
11. (14.) Prothorax evidently wider than long. 
12. Elytra finely costate, intervals rugose-punctate .. JEthalides. 
13. (14.) Form more ovate and explanate. 
14. Elytra strongly sculptured, costate, or rugose- 
reticulate, or both ... ... ... ... ... Nyctozoilus. 
15. (20.) Submentum not at all dentate. 
16. (18.) Form elongate, narrow and convex. 
17. Prothorax nearly as long as wide, its surface 
asperate *Styrus. 
18. Prothorax much wider than long, its surface 
smooth or finely punctate ... . .. ... Byallius. 
19. Form sub-depressed, prothorax contracting in 
front *Amphianax. 
20. Pilose, convex, smaller than above, sides of pro- 
thorax, anterior and intermediate tibiae crenu- 
late on outer edge Trichosaragus. 
21. (23.) Mandibles simple at apex. 
22. Prothorax short, subtruncate at apex, eyes not at 
all divided Aglypta. 
23. Anterior tibiae crenulate on outer edge Onotrichus n.g. 
In the above, the second column of numerals (in brackets) refers to the number in the first 
column that is included by the character specified. 
* Bates omits any reference to mandibles in Styrus and Amphiunax. I find them distinctly 
bifid at apex in Styrus, but unfortunately I have no specimen of Amphianax for examination. 
