1908.] 223 



narrower in proportion to its length with the narrowing behind 

 straight or inclining to concave. 



R. affinis, Marsh. — An uncommon species, of which the greater 

 number of my specimens are from the " Breck " district of south- 

 west Norfolk; but I have taken single examples on two occasions at 

 Colesborne, and have seen specimens taken by Mr. Champion at Lee, 

 Kent, and in other parts of the London district. 



H. griseus, Hbst. (Ganglb.). — Next to brevipalpis this is the 

 species which I have taken most frequently. 



R. granulans, L. (Ganglb.).— This is repued to be a very 

 common species on the Continent, but its claim to be regarded as 

 a British species rests, so far as I know, upon two specimens from 

 Ivillarney, recorded by Blackburn under the name brevicollis, Thorns. 

 (cf. Eut, Mo. Mag., xiii, p. 39) ; two others in the Power collection, 

 from the London district, which seemed to Canon Fowler to agree 

 with a type specimen sent by M. Bedel and the determination by 

 Messrs. Johnson and Halbert (Proc. Eoy. Irish Acad., Ser. 3, vol. vi, 

 p. 612, 1902) of specimens recorded from Killarney by Wollaston 

 (Zoologist, v, 1847) as brevicollis, Thorns. The difference between 

 griseus and granularis in the relative length of the elytra in propor- 

 tion to their height, when viewed from the side, is very evident, and 

 1 have examined large numbers of griseus without finding one which 

 showed any approach to the proportions proper to granularis. 



R. crenatus, Rey.— This insect resembles a large viridicollis, from 

 which it is easily distinguished by the middle furrow on the head not 

 widened in front, and the dorsal interstices of the thorax as strongly 

 umbilicate-punctate as the intermediate ones, indeed, the punctua- 

 tion of the entire surface of the thorax might fairly be described 

 as equally strong throughout. The elytral stria? are coarsely and 

 closely punctured, and the interstices are somewhat narrow and 

 convex, but not more so than in many examples of viridicollis. These 

 particulars are taken from a specimen belonging to Mr. Champion 

 and labelled " Ganglbauer, Mte. Legnone." The species is recorded 

 from England by M. Pandelle, and has really nothing to do with 

 viridicollis. 



11. stric/ifrons, Thorns. — Of the size and appearance of viridi- 

 collis, but in the lateral aspect the elytra are evidently higher in 

 proportion to their length and the slope of their apical third is 

 distinctly more steep. The middle furrow of the head is not appre- 



