CURCULIONIDtE. NF.DYUS. 27 



Genus CCLXXXIV.— Nedyus, Schdnherr. 



Antennw geniculated, 12-jointed, rather short, slender ; funiculus 7-jointed, its 

 basal joint longer than the remainder, subobconic, the second elongate, rather 

 slender, the rest short, subnodose, the club ovate, acuminate, quadriarti- 

 culate. Rostrum long, slender, curved, received during repose in a short pec- 

 toral groove, rarely extending beyond the base of the first pair of legs : thorax 

 attenuated, and coarctate in front, bisinuated posteriorly: scutellnm minute: 

 e/?/^ra subtriangular, shorter than the abdomen: body somewhat rhomboid, 

 squamous: /e^j moderate: jferaora sometimes dentate: tibiw truncate at the 

 apex, and unarmed. 



From the preceding- genus Nedyiis diifers not only by having- the 

 pectoral cavity for the reception of the rostrum, during repose, con- 

 siderably abbreviated, — scarcely reaching to the base of the first 

 pair of legs, — but in the structure of the antennse, the intermediate 

 joints of the funiculus being dissimilar; — and from Rliinoncus, the 

 elongated rostrum and quadriarticulate club of the antennae, exclu- 

 sively of other characters, readily distinguish the present genus ; 

 the species of which frequent flowers, and in their primary state 

 cause galls upon the roots of plants. 



A. With the thorax not tuberculated, nor with its anterior margin reflexed : 



(femora simple.) 



Sp. 1. Sisymbrii. — Plate xx. f. 2. — Subdepressus, niger, dense albo-squamu- 

 losus, supra fusco'-variegatus, rostro punctoque humerali elytrorum glabris 

 nigris. (Long. corp. 1^ — 2 lin.) 



Cu. Sisymbrii. Herbst.—Ne. Sisymbrii. Steph. Catal. 153. No. 1544. 



■Somewhat depressed, black, densely clothed with whitish scales, variegated 

 above with fuscous : the rostrum, and a spot on the shoulders of the elytra, 

 glabrous black: elytra rather obsoletely punctate-striated, the interstices 

 very delicately punctured: legs elongate, slender, black, densely squamous: 

 antennse slender, black. 



Ne. Sisymbrii is known from the other species by having the thorax simple, the 

 body densely clothed with whitish scales, — which, from being somewhat more 

 scanty on some parts of the elytra, give a variegated appearance thereto, — 

 except the rostrum and a spot on the shoulders, which are deep glossy 

 black. 



Not very abundant : found on the Sisymbrium amphibium, occa- 

 sionally within the metropolitan district : 1 have received it from 

 Somersetshire and from Norfolk. — " Netley." — Rev. F. W. Hope. 



