350 RHYNCHOPHORA. [ Ceuthorrhynchus. 
and the small femoral teeth of the female; the latter character, the 
colour of the elytra, and the less strong sete will separate it from C. 
setosus. 
Cc. suturellus, Gyll. Short-oval, convex, black, with the elytra 
blue, suture black with a spot of white scales at base, underside 
clothed with white scales which are very close beneath shoulders ; 
thorax very sparingly furnished with whitish scales, rufescent beneath 
on apical margin, broader than long, strongly punctured, with a central 
furrow and a lateral tubercle on each side; elytra without raised sete, 
and with distinct obsoletely punctured strie, interstices rather de- 
pressed, finely rugose ; legs black, femora toothed. LL. 2-23 mm. 
On Cardamine pratensis; rare ; Snodland, Kent (Champion) ; Hythe (Tylden) ; 
Bearstead, near Maidstone (Gorham). 
C. pilosellus, Gyll. (hispidulus, Stevens, M.S.). Short, ovate, 
moderately convex; black, rather shining ; underside clothed with 
yellowish scales ; thorax with a short line in middle of front of thorax, 
and elytra with a spot at scutellum covered with whitish or yellowish- 
white scales, and some of the same scales scattered over disc; elytra 
rather closely covered with brownish hairs, upright and inclined back- 
wards ; these are also present to a less degree on thorax; thorax with 
a eentral furrow and conical lateral tubercles, constricted at apex, an- 
terior margin rather strongly raised, base almost straight ; elytra with 
rather deep punctured striz, interstices convex, rugose and roughened 
towards apex. L. 2-3 mm. ; 
Sandy places ; by sweeping herbage ; the food plant does not appear to be known; 
very rare; Birch Wood, Charlton and Plumstead (S. Stevens) ; Deal; Seaton, 
Devon, January Ist to 5th, 1864 (Power, two specimens). 
C. quadridens, Panz. Oblong ovate, upper surface rather depressed, 
upper and under sides clothed with greyish-brown or whitish-brown 
scales, which are thicker beneath, black, with the antenne, extreme 
apex of tibia, and tarsi, reddish-testaceous ; thorax long, strongly and 
broadly constricted before apex, closely punctured, with a central 
furrow and lateral tubercles; elytra with an zneous reflection when 
denuded of scales, strongly tuberculate at apex, with fine, scarcely 
punctured, strie and broad flat interstices, which are furnished with 
upright pubescence ; the base of the suture is more thickly clothed with 
scales; the species appears to be very easily rubbed, and unless in 
fresh specimens the scales of the upper surface are often scanty and 
abraded ; legs moderately long, femora with small teeth. L. 2{-27 
mm. 
Male with the posterior tibize armed with a large hook and the last 
segment of the abdomen impressed in middle. 
On Sisymbrium, Brassica and other Crucifere ; the larva lives in the stems or 
at the roots; locally common; generally distributed in the London district and 
