350 RHYNCHOPHORA. [CeuthorrJiynchus. 



and the small femoral teeth of the female ; the latter character, the 

 colour of the elytra, and the less strong setae will separate it from C. 



C. 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 setse, 

 and with distinct obsoletely punctured striae, interstices rather de- 

 pressed, finely rugose ; legs black, femora toothed. L. 2-2 1 mm. 



On Cardamine pratensis; rare; Snodland, Kent (Champion) ; Hythe (Tylden) ; 

 Bearstead, near Maidstone (Grorbam). 



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 central furrow and conical lateral tubercles, constricted at apex, an- 

 terior margin rather strongly raised, base almost straight ; elytra with 

 rather deep punctured striae, 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 Plmnstead (S. Stevens) ; Deal; Seaton, 

 Devon, January 1st to 5th, 1861 (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 antennae, extreme 

 apex of tibiae, and tarsi, reddish-testaceous ; thorax long, strongly and 

 broadly constricted before apex, closely punctured, with a central 

 furrow and lateral tubercles ; elytra Avith an aeneous reflection when 

 denuded of scales, strongly tuberculate at apex, with tine, scarcely 

 punctured, striae 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. 2j-2 

 mm. 



Male with the posterior tibiae armed with a large hook and the last 

 segment of the abdomen impressed in middle. 



On Sisymbrium, Brassica and other Crucifera ; the larva lives in the stems or 

 at the roots ; locally common ; generally distributed in the London district and 



