522 Coleopterotogical Notices, IV. 



but few special peculiarities to which it is necessary to call atten- 

 tion at present; one of these is, however,, possibly of considerable 

 significance from an etiological point of view, and relates to the 

 modified impression of the prosternum. The prosternum is greatly 

 developed, rather remotely separating the coxae, and almost perfectly 

 flat, but, in the middle, at some distance behind the anterior mar- 

 gin, there are two deep punctiform fovese, moderately separated and 

 arranged transversely. These fovea? are general^ connected by a 

 groove, and sometimes form the anterior limit of a more or less 

 visible but feeble short parallel-sided impression. A still more 

 advanced development of this peculiar modification of the remnant 

 of the rostral sulcus, has been described under the genus Glyptobaris. 



In Onychobaris the beak is decidedly longer than in Baris, being 

 generally a little longer than the prothorax, and is always strongly 

 arcuate and more or less slender ; it is separated from the head 

 by a transverse impression, which is always feeble and invariably 

 abruptly impunctate and polished. The tarsi vary considerably in 

 structure, the last joint being frequently as long as the first three 

 together but generally shorter. The scutellum is transverse, never 

 impressed, and usually more or less broadly rounded behind. The 

 male sexual characters are feeble, the abdominal impression being 

 invariably slight and often scarcely distinguishable. 



It is to be regretted that the majority of the species are still 

 represented by unique examples, and there is consequently reason 

 to believe that the following table contains only a small proportion 

 of the forms inhabiting the inhospitable and comparatively unex- 

 plored regions which have developed this interesting special type. 



Pronotum extremely densely punctured, only rarely with trace of median im- 

 punctate line, which is then much abbreviated 2 



Pronotum less densely punctured, generally with a distinct impunctate line, 

 entire or abbreviated, but at least occupying one-half of the total 

 length 10 



"Z — Elytral punctures more or less broadly confused on all the intervals ; body 

 generally broader and more oblong or subrhomboidal 3 



Elytral punctures forming nearly even single series on all the intervals ; body 

 more narrowly oval and convex 6 



3 — Legs, and sometimes also the beak, more or less rufescent 4 



Legs and beak intense black throughout 5 



4 — Body not strongly depressed, the seta? moderately dense but not very long 

 or robust. 

 Pronotal punctures coarse, usually with a distinct but very narrow and 

 incomplete impunctate line 1 densa 



