316 Mr. J. Walton on the genus Omias. 



lour, may be distinguished as being nearly glabrous and very 

 shining ; as having the thorax subglobose, coarsely and remotely 

 punctured ; the scutellum distinct, triangular, and the elytra glo- 

 bose-ovate. 



I possess authentic specimens of 0. mollicomus of Ahr. from 

 Germar, and of O. pellucidus from Chevrolat, which are distinct 

 species ; and although closely allied to O. brunnipeSj they may 

 readily be distinguished from that insect by having the elytra 

 oblong-ovate, and being clothed with hairs. Mr. Stephens, in his 

 ' Manual of British Coleoptera,^ has introduced the above-named 

 two species as indigenous, but I have not hitherto observed a 

 specimen of either in any collection. 



Common in hedges in sandy districts in June and July. 



4. Omias sulcifrons, Schonh. 



Oblong, black, shining, and very sparingly clothed with short, 

 scattered, white pubescence. Head large, very broad, the vertex 

 convex, closely punctulated, the front deeply furrowed to the apex 

 of the rostrum ; eyes small, rotundate, very prominent ; rostrum 

 scarcely as long as the head, and but a little narrower, and thickly 

 punctm-ed. Antennse rather slender, rufo-ferruginous, the clava 

 long-ovate and very acute. Thorax a little broader in the middle 

 than long, narrowed anteriorly, moderately dilated and rounded 

 at the sides, rather convex above, coarsely punctured towards 

 the sides, and remotely and irregularly on the disk. Scutellum 

 small, triangular and distinct. Elytra oblong-ovate, nearly gla- 

 brous, rather wider at the base than the thorax, the shoulders 

 rounded and not elevated, somewhat dilated at the sides, mode- 

 rately convex above, punctate-striate, the interstices plane and 

 rather smooth. Legs rufo-ferruginous, shining and pubescent. 

 Length 1^ — If line. 



Readily recognised by its broad head and deep sulci, and by 

 its elongate form. 



This insect, which is new to this country, was unknown to 

 Schonh err until I sent a specimen. 



First discovered in Dalmeny Park, Scotland, by Mr. R. N. Gre- 

 ville in August ; and subsequently found at Mount Edgecomb, 

 Devonshire, in May, by Mr. T. V. Wollaston ; to both of these 

 gentlemen I am indebted for specimens. 



It is necessary to notice that the insect included in the genus 

 Cathormiocerus [Trachyphloeus olim) of Schonherr, and described 

 under the name of C. socius, with the addition of " Patria Anglia. 

 Mus. Dom. Walton,^' I gave to Schonherr ; it is the only speci- 

 men I have seen, and I think it came into my possession with 

 the collection of the late Mr. Millard of Bristol. Of its history and 

 locality I am equally ignorant ; the genus only contains two spe- 



