226 RHYNCHOPHORA. [ Sitones. 
and with the fifth ventral segment of the abdomen roundly truncate at 
apex: in the female the same segment is quite rounded. 
On various Papilionacee, clover, vetches, peas, &c.; only too common and gene- 
rally distributed throughout the kingdom; it is hard to find a place, as Mr. Rye 
observes, where this pest does not occur from earliest spring down to the foggiest and - 
dampest autumn evenings: the colour varies somewhat, being ordinarily brown, but 
sometimes ochreous or even greenish grey: the shape of the thorax, however, long 
parallel elytra, and slender antenne will serve to distinguish it. 
S. sulcifrons, Thunb. (subaurata, Steph., pleuriticus, Steph., 
chloropus, Marsh). One of the smallest, if not the smallest of our 
species; black ; clothed with sparing metallic scales, which are always 
more or less abraded, and asin S. suturalis are more or less reddish- 
coppery or greenish ; head with a broad excavation from eye to eye, 
eyes somewhat prominent, often yellowish, antenne ferruginous ; thorax 
as long as, or longer than, broad, with the sides slightly rounded, very 
closely but distinctly and moderately strongly, although shallowly, 
punctured ; elytra short, with distinct punctured striz, which are 
obsolete at apex; femora dark, tibize and tarsi red; breast pubescent 
with the side pieces of meso- and metasternum plainly clothed with 
whitish or greyish scales; occasionally the legs are entirely ferruginous; 
the species, perhaps, most closely resembles S. swturalis, but the small 
size, frontal excavation, more prominent eyes, and scantier scales will 
serve to separate it. L. 23-3 mm. 
By sweeping clover, lucerne, vetch, &e. ; especially in damp places ; not so abund- 
ant as some species, but generally distributed throughout the kingdom, and, asa rule, 
common; it is often plentiful on the south coast, and Dr. Sharp records it as common 
in Scotland. 
Thomson (Skand. Col. vii. 96) says that the female has the forehead 
level between the eyes, but in this he seems to have made some 
mistake. 
GRONOPINA. 
This tribe is represented in Europe by the genera Gronops and Rhyti- 
dorrhinus ; these are usually placed under the Byrsopina, which latter 
tribe, as remarked by Bedel (l.c. p. 74) is very distinct from the fact of 
having the intermediate cox contiguous; its members, moreover, are 
confined to Southern Aftica ; one species, only, belonging to the genus 
Gronops is found in Britain ; Thomson ineludes it under the Bagoina, 
to which it is in some points related. 
GRONOPS, Schonherr. 
This genus contains only about a dozen species which are, however, 
very widely distributed from Siberia to the Cape of Good Hope ; the 
single British species is a small dull rugose insect, which is found at the 
