2j, [June, 1873. 



Species 1. — Idiocerus adtjsttjs, H.-Sc1i. 



Bt/thoscopus adustus, H.-Sch., D. I., 144, 9. 



Idiocerus varius, Flor, Ehyn. Liv., Vol. ii, 1G6, 3 ; Marshall, Ent. Mo. 



Mag., Vol. ii, 103, 1 ; Kirschb. Cicad. 153, 2. 

 Idiocerus stigmaticnlis, Lewis, Traus. Ent. Soc, Vol. i, p. 48. 



„ adustus, J. Sahib., Nott. Femi., part 12, 140, 1. 



^ pale yellow or orange-yellow ; Corium, anterior margin flat- 

 tened in the middle, on which are from 5 to 7 nodules. 



Head pale Tellow or oraiige-jellow. Crown in front, with a small black puncture 

 near each eje, frequently wanting. Face pale yellow or orange-yellow. Antennce 

 with a black somewhat lanceolate plate a little before the apex. 



Thorax : protiofain pale yellow, bone white or greenish-grey, with a broadish, pale 

 brown longitudinal streak on each side of the centre, within the lateral margin 

 sometimes blackish, near the anterior margin on each side of the centre are 

 three irregularly shaped and placed black spots, or short streaks. Scutellutn 

 yellow, within the basal angles a black triangular patch frequently joined by a 

 narrow streak across the anterior margin, these again are joined to a longitudinal 

 central line terminating before the apex in a ring, so that, when viewed from the 

 head, it is of an anchor-shaped form ; across the middle of the disc is a trans- 

 verse slightly curved channel, in which is generally a black puncture on either 

 side of the centre. 



Elytra -. clavtis testaceous, inner margin piceous, nerves brown ; central nerve white 

 next the apex, basal portion with a few minute granules on either side. Corium 

 pale testaceous, anterior margin at the base orange-yellow, in the middle flattened 

 out, on which are 5 to 7 nodules, within the margin of this portion is a broad 

 longitudinal black streak, on which are 2 or 3 minute, round, orange-yellow spots 

 placed at irregular intervals ; longitudinal and transverse nerves — except at the 

 base and apex — piceous or black, and with minute black granulations on the 

 sides ; apex of the corium next the anterior margin more or less broadly orange- 

 yellow ; membrane pale testaceous with a slight fuscous tinge ; nerves blackish. 

 Wings somewhat fuscous, darkest at the apex ; nerves black. Sternum pale 

 yellow or orange-yellow. Legs pale yellow or orange-yellow ; thighs generally 

 with a longitudinal black line on tlie outside ; tibice at the base exteriorly with 

 a black dash, which is frequently continued as a narrow line to the apex ; apex 

 more or less brown ; tarsi yellow, apex of the joints brown. Abdomen, above 

 black, sides and posterior margins of the segments narrowly pale yellow ; 

 beneath pale yellow, posterior margin of the first segment narrowly black ; last 

 genital segment black, generally with a pale yellowish spot or streak near the 

 middle of the posterior margin ; exterior processes dark brown or piceous, in 

 shape somewhat resembling a single unburst bud of the honeysuckle ; apex 

 clothed with long, fiiie white hairs. ? difl^ers chiefly from the (J in not having 

 the anterior margin nodulose in the middle, nor the bright orange anterior 

 margin and apical spot. Length, 2\ — 3 lines. 



Easily recognized from all other British species by the nodulose 

 anterior margin of the ^J . 



Common everywhere by beating willows, &c., from August to 

 October. 



