ee Mr. J. Walton on the genera 
inclined to consider both varieties of the same insect, and. I think 
their numerous varieties may be subdivided as follows :— : 
a. With a distinct black sutural stripe at the base: St. ilibatus, 
Schoénh. ; Corylt, Fab. and Steph. 
b. Somewhat smaller, of an uniform brown or gray: St. Coryli, 
Schénh., Gyll.; obesus, Marsh., Steph., and cognatus, Steph. 
c. Still smaller, the elytra marked with white at the sides: Sé. 
cervinus, Fab. ; asperifoliarum, Steph. ; nebulosus, Steph. ; ru- 
Jipes, Steph. ; atomarius of Marsh. and Steph.” 
I have examined some hundreds of Stroph. Coryli, and I have 
never seen a specimen without the black stripe at the base of the 
suture ; I am therefore inclined to think it is a constant character, 
and not the result of abrasion ; nevertheless it may always be di- 
stinguished by the more solid characters of form and sculpture ; 
the elytra are of a different and less variable form than obesus ; 
the humeral angles more prominent, subrectangular, abruptly 
rounded and narrowed towards the base, the sides from the 
shoulders to beyond the middle nearly straight; in obesus the 
form is nearly oval; in Coryli the thorax is coarsely granulate- 
rugose, with a narrow dorsal channel sometimes obsolete; in 
obesus it is rugulose-punctate and not channeled ; the stiiz on 
- the elytra of the former are distinctly broader and deeper than in 
the latter, the interstices more convex, and the sixth from the 
suture elevated behind the middle ; these differences of sculpture 
are remarkably distinct in denuded specimens. It is a larger in- 
sect and not so variable in size ; and although specimens of obéesus 
attain the magnitude of Coryli, yet the greater part of the former 
are considerably smaller than the least of the fntthn, 
Very commion on the bitch and hazel. 
2. Strophosomus obesus, Marsh. 
— rufipes, Steph. . 
— subrotundus, Marsh., Kirb. MSS. 
— asperifoliarum, Steph., non Kirb. MSS. 
— atomarius, Marsh. 
— cognatus, Steph. 
— nigricans, Steph., non Kirby. 
— nebulosus, Steph. — 
Curc. Coryli, Payk., Gyll., Schonh:, Germ, var. 6; ¢. 
.— obesus (var. 6:), Kirb. MSS. 
I have recently examined an authentic specimen of Cure. sub= 
rotundus from the collection of Marshani, which agrees exactly 
with his deseription; and I have likewise examined another in the 
collection of Kirby; these I have no doubt ate large varieties of 
this species; Curc. atomarius, according to a specimen from the 
late Mr. Marsham’s cabinet and which agrees with his descrip- 
