REVISION OF THE NYCTOZOILIDES. 137 
The group ha,s been long in a confused condition, so that it has 
been difficult to determine species already described, and even to 
determine the genera themselves, except by those entomologists who 
have access to the types. It is especially for the sake of Australian 
entomologists that the author ventures to tabulate the genera and 
species, though aware of his inability to do full justice to the 
subject, having at least one qualification in the opportunity of 
inspecting a larger quantity of material than that available to 
previous writers on the group. A visit to London three years ago 
thus enabled him to examine the types of Onosterrhus, Hypocilibe, 
Amphianax, &c, in the British Museum collection. The collections 
of the Macleay and Australian Museums in Sydney, of the National 
Museum, Melbourne, and the Queensland Museum, Brisbane, have 
all been examined, thanks to the courtesy of the respective curators ; 
also I have to thank Mr. Lea for the loan of his collection; while 
fairly long series of certain species in my own collection, many of 
which were captured by the author, enable me to speak more 
decidedly on sexual and other variations. The present classification 
of the genera of the Australian Ten ebrioniclae is so confused that we 
are grateful to Herr Gebien for some attempt at placing the genera 
of this group in a more natural order in the new catalogue of 
Junk. In this catalogue sixteen genera appear, of which two, 
Cilibe and Pseudopatrum, are confined to New Zealand, and one, 
Pseudhadrus, to the Seychelles Islands. These three are there- 
fore excluded from the range of this paper. Gebien also places 
Triclwsaragus, Ospidus, Edylius, and Byallius in this section, 
As regards the first of these, the author, Blackburn, placed 
Triclwsaragus as an ally of Saragus, and thus a member of the 
true Helceides. Through the courtesy of Mr. Tepper I have 
received cotypes of T. pilosellus, Blackb., and an examination of 
this insect leads me to endorse Gebien's classification of it under 
the Nyctozoilides. The mandibles are bifid at the apex (a fact 
omitted in the generic diagnosis of the author), while the prothorax 
and elytra, are not foliaceous nor dilated laterally, while the inter- 
coxal process is wide and rounded. Paseoe placed Ospidus also 
under HehTeinoe, as an ally of Cilibe. Its winged body, with the 
.corresponding elongate metasternum, and its narrow triangular 
intercoxal process, and comparatively wide though declivous lateral 
border to the elytra, are combinations of characters quite opposed 
