386 RHYNCHOPHORA. [Bdlcininus. 



Male with the antennae inserted in the middle of the rostrum, which 

 is shorter than the body. ' 



Female with the antennae inserted behind middle of rostrum, which 

 is longer than the body. 



On birch (Betula alba) and sloe ; rare ; Esher ; Headley Lane (Gorham) ; Coombe 

 Wood and Wimbledon Park (Stephens) ; Plumstead (S. Stevens) j Exeter (Parfitt). 



B. rubidus, Gyll. (betulce, Desbr., nee Steph.). Extremely like 

 the preceding in general appearance, but rather smaller, and distinguished 

 by having the rostrum considerably shorter and all the femora simple ; 

 the legs also are shorter ; the thorax is rather less narrowed in front and 

 the scales on the thorax are more even with the lines of lighter ones 

 scarcely indicated ; the scales on the elytra, moreover, are greyish white 

 instead of being yellowish. L. 2|-3| mm. 



On birch (Betula alba) ; often by sweeping herbage under birch trees ; very local, 

 but less uncommon than the preceding ; recorded by Mr. Champion as not uncommon 

 in the London district and taken by him at Shirley, Mickleham, Farnham and Esher, 

 at the latter place in abundance; Forest Hill ; Ashwicken, Norfolk (Power). 



B. villosus* F. (cordifer, Fourc. ; cerasorum, F., verisim, sec 

 Bedel). Black ; base of antennae red ; rostrum black, at all events from 

 base to insertion of the antennae, beyond which it is often more or less 

 reddish ; in all the preceding species the rostrum is red or ferruginous 

 if viewed sideways against the light, even when, if viewed from above, 

 it appears partially dark ; underside evenly and closely, upper side 

 scantily and irregularly clothed with grey hair-like scales, scutellum 

 (which is rather large) and a fascia or spot behind middle of each elytron 

 thickly clothed with white scales ; rostrum long ; thorax closely 

 sculptured, slightly constricted at apex ; elytra with distinct striae, inter- 

 stices broad, granulose ; legs more or less thickly clothed with scales ; 

 femora with not very large but sharp and distinct teeth. L. 4-5 mm. 



Male with the antenna inserted in the middle of the rostrum which 

 is shorter than the body, rugosely striate at base, and red at apex. 



Female with the antennae inserted a little behind the middle of 

 rostrum, which is as long as the body, smooth and shining at base and 

 brown at apex. 



On oaks and hazels, especially the former ; local, but widely distributed ; London 

 district, not uncommon, Mickleham, Asbtead, St. Mary Cray, Darenth, Dulwich ; 

 Birch Wood, Rusper, Whitstable ; Suffolk ; Hastings; Portsmouth district ; Glanvilles 

 Wootton; Swansea ; Devon ; Stoke Wood, rare; Bristol ; Swansea ; Llangollen ; Sutton 

 and Knowle, near Birmingham ; Burnt Wood, Staffordshire ; Bretby Wood, Kepton ; 

 Sherwood Forest ; Lincoln ; Northumberland and Durham district, rare on hazel j 

 not recorded from Scotland. 



B. salicivorus, Payk. (brassicce, F. 1 brassicce, Brit. Cat.). Black, 

 base of antennae reddish-yellow, upper side very scantily covered with 

 grey pubescence, scutellum and underside of body, together with the 

 metasternum, thickly covered with white scales ; rostrum long and 



