126 UHTNCHOPHORA. [JRtynchitei. 



the female ; in this he appears to be correct, although one or two 

 authors seem inclined to refer the longer rostrum to the male. 



R. nanus, Payk. (planirostris, F. nee Desbr.). A small elongated and 

 narrow species, of a greenish-blue colour, shining ; almost glabrous ; 

 forehead obsoletely punctured, rostrum rather smooth ; thorax sub- 

 cylindrical and subparallel, coarsely punctured, without central channel ; 

 elytra with strong punctured striae, interstices narrow, finely substrigose 

 transversely ; anterior tibia? simple at apex, intermediate with a small 

 hook at apex in one sex, apparently the male ; legs rather long and slender. 

 L. If -2 mm. 



On young birches in woods ; somewhat local, but common where it occurs, and 

 generally distributed from the southern districts to the north midland districts ; 

 rarer farther north ; Northumberland and Durham district, not common; the Scotch 

 record is " Solway, Tweed, and Moray districts," but Dr. Sharp adds a note to the 

 effect that he lias never seen a Scottish specimen and thinks it very probable that the 

 specimens should be referred to the following species : it has been taken in Ireland. 



R. uncinatus, Thorns, (planirostris, Desbr., jiecF., tomentosns, Gyll., 

 sec. Bedel). Extremely like the preceding, with which it has been very 

 often confused, but easily distinguished by having the anterior tibiae 

 produced into a tooth internally at apex, by the rostrum being longer (if 

 compared in the same sex) and the thorax evidently widened behind 

 middle ; the forehead and rostrum, also, are more plainly punctured, and 

 the thorax is more regularly punctured and has an obsolete central 

 channel, which, however, is not always very evident ; the legs are 

 nigro-cceruleous, and the tarsi have the first joint elongate. 

 L. l-2i mm. 



On aspens, willows, young oak, hazel, birch, &c. ; local and not common, although 

 sometimes met with in some numbers where it occurs ; Darenth Wood, Esher, 

 Micklehnm, Horsell, Wimbledon, Weybridge, Chatham, Chertsey, Woking, Maid- 

 stone ; Lords Wood, Southampton ; New Forest ; Bewdley ; Cannock Chase ; Knowle, 

 near Birmingham ; Chat Moss ; Strettord, near Manchester ; Northumberland and 

 Durham district, somewhat rare, but from several localities ; Scotland, scarce, 

 Sobvay and probably other districts. 



R. sericeus, Herbst. (ophthalmicus, Stoph.). Deep-blue, rarely 

 greenish-blue, or violet blue, shining, with outstanding fuscous pubescence ; 

 rostrum very short, sulcate at base ; head large, diffusely punctured, eyes 

 prominent; thorax with sides rounded and somewhat dilated about middle, 

 coarsely punctured, sometimes obsoletely furrowed in centre ; scutellum 

 small ; elytra with moderately coarsely punctured stria? which reach apex, 

 interstices with smaller punctures ; antennas black ; legs blue-black, 

 slightly pilose. L. 4-5| mm. 



On young birch, hazel, &c. ; in woods ; very local, but sometimes not uncommon 

 where it occurs ; Darenth Wood ; Coombe Wood ; Bewdley Forest ; Scarborough ; 

 Scotland, very rare, Forth district. 



R. pubescens, F. Greenish-blue, or blue, shining, thickly clothed 

 with very long, outstanding, fuscous hairs ; rostrum short, sulcate at base ; 



