

Dorytomiis.] RHYXCHOPHORA. 275 



and Durham district, apparently rare; Scotland, rare, Solway, Tweed. Foith aud 

 Clyde districts. I know of uo record from Ireland, bat it almost certainly occurs in 

 that country. 



D. tremulae, F. Fusco- ferruginous, occasionally light ferruginous, 

 with ashy pubescence, which is much variegated on elytra ; head closely, 

 but rather distinctly punctured, rostrum long and slender, shining 

 black, glabrous, curved and striated ; antennae lighter or darker red ; 

 thorax transverse, with the sides rounded, broadest a little before 

 middle, rather finely punctured, with a raised central line which is 

 more distinct in front; elytra oblong, scarcely broader at shoulders 

 than thorax ; legs stout, lighter or darker red, femora robust and 

 clavate and armed with a strong tooth. L. 4-5 mm. 



Male with anterior tibiae produced into a distinct angle in the middle 

 of their inner side, and the rostrum more distinctly striated ; teeth of 

 femora very strong. 



Female with the anterior tibiae almost straight, and the rostrum less 

 distinctly striated ; ieeth of femora less strong. 



On Populus alba (White Poplar) and Populus tremvda (Aspen) ; rare ; Birch 

 Wood, and Swanscombe Wood, near Gravesend, Kent (on young aspens at the end of 

 June); West Wickham (T. Wood) ; Glanvilles Wootton (Dale); FonUands, Devoa 

 (Partitt ; Bristol; South Wales; Knaresborough, Yorkshire, and near Carlisle 

 (Heysham) ; the stouter form, broader thorax and more robust legs will separate it 

 from the allied species. 



D. tortrix, L. One of the most distinct of all the species ; pale 

 testaceous, rather shining, almost glabrous, with thin and scanty uneven 

 pubescence, and not variegated ; breast f nscous ; head closely punctured, 

 rostrum moderately long, slightly curved, shining, finely striated and 

 punctured ; thorax transverse, finely but evidently punctured, with the 

 central line not very distinct ; elytra with rather strong punctured 

 striae, interstices finely punctured ; legs pale testaceous .yellow with the 

 femora slightly clavate and dentate. L. 5-6 mm. 



Male with the antennae inserted further in front of middle of rostrum, 

 and the teeth of the femora stronger. 



On aspens and willows, local but not uncommon where it occurs ; Dnlwich, 

 Darenth Wood, Caterham, Haiupstead, Cowley, The Holt, Farnham, Swanscoiulie 

 Wood, near Gravesend, &c. ; Norfolk ; Suffolk ; St. Peters, Kent ; Glanvilles 

 Wootton ; Devon ; Bristol ; South Wales ; Midland districts, widely distributed an-l 

 found in many localities ; Scarborough; Alton, near Manchester; Northumberland 

 and Durham district, T\\ izell and Durham ; Scotland, on aspens and Lombaruy 

 poplars, Solway, Forth, Dee, Moray and probably other districts ; Ireland, near 

 Dublin and Belfast, and probably widely distributed. 



X>. hirtipennis, Bedel (tem'atus, Brit. Cat., Gyll., Thorns., ntc F.). 

 Fuscous, or fusco-ferruginous, dull, clothed with rather thick greyish 

 pubescence and with small raised black setae on the elytra which are 

 plainly visible at the sides ; the thorax is either fuscous, or ferruginous, 

 or ferruginous with a fuscous spot in the centre, and the elytra are varie- 



T 2 



