Ceuthorrhynchus. | RHYNCHOPHORA. 355 
base of suture, underside thickly clothed with whitish scales, which 
are also present at the sides of the elytra; thorax transverse, covered 
with small and very close circular punctures, strongly constricted in 
front, apical margin raised, with an obsolete central furrow, and with- 
out lateral tubercles ; elytra with fine punctured striz, interstices broad, 
slightly roughened at apex, but with the sides smooth; apex of pygi- 
dium with a deep incision both in the male and female ; intermediate 
and posterior femora rather feebly toothed. L. 2-23 mm. 
Male with the posterior tibia armed with a hook, the last ventral 
segment of the abdomen broadly and deeply impressed, and the pygidium 
narrowly but deeply incised at apex. 
Female with the tibize simple, the last ventral segment impressed 
with a narrow line at apex, and the pygidium with a short incision. 
On Taraxacum officinale (Common Dandelion) ; thelarva lives in the plant-head ; 
also found in moss on chalky hill sides, &c.; rare; Caterham; Dorking; High- 
gate; Darenth; Hythe; Deal; Scotland, rare, Solway, Moray and probably other 
districts. 
Cc. marginatus, Payk. Very closely allied to the preceding, of 
which it has been considered merely a variety, or rather C. punctiger has 
been considered a variety of this species ; it differs in having the thorax 
sub-depressed and shagreened, and the elytra evidently depressed in 
front and finely asperate at the sides; the second joint of the antennz 
is shorter, the thorax is less widely constricted before apex and less 
convex, and the elytra are broader towards apex; the rostrum of the 
female is also shorter and broader; the pygidium is foveolate behind in 
the male and entire in the female, L. 23-3 mm. 
Chalky and sandy places; by sweeping herbage; often found in flowers; the larva 
lives in the heads of Hypocheris maculata; local; London district, rather com- 
mon, Caterham, Mickleham, Darenth, Reigate, Shirley, Weybridge, Haslemere, West 
Wickham, Cowley, Horsell, Bearsted, Wimbledon, Chatham, Gravesend, Bushey; 
Birchington; Deal; Dover; Folkestone; Sandwich; New Forest; Knowle; Lin- 
coln; Barmouth; Llandudno; Yorkshire; Manchester district, general, but not 
common; Northumberland and Durham district; Scotland, Balmuto, Fifeshire 
(Power) ; Ireland, Rathkurby, near Waterford (Power). 
(C. rotundatus, Bris. This species of M. Brisout, which is recorded 
as from France in the catalogue of Heyden, Reitter and Weise, but is 
not referred to at all by M. Bedel, appears to be intermediate between 
the two preceding species ; it is described as near C. punctiger, but of 
shorter form and greater convexity, with relatively wider striz, and its 
pygidium not deeply excised. L. 2-25 mm. 
By sweeping herbage; sometimes found on flowers, &c.; rare; first mentioned as 
taken by Mr. Crotch, near London; Reigate, Caterham and Weybridge (G. C. 
Champion). 
C. urtice, Boh. An inconspicuous-looking species, dull black, with 
the base of the antenne and the tarsi yellowish-red, upper side scantily 
and unequally covered with greyish scales which form no pattern but are 
Aa 2 
