Dorytomus and EUeschus. 313 



early as IMarch. " On the gray sallow {Salix cinerea), Wimbledon 

 Common," Mr. S. Stevens. 



5. D. affinis, Pk., Gyll., Steph., Schonh. 



This may be known from the large specimens of D. costirostris 

 by the rostrum being shorter, thicker, less curved, and pubescent ; 

 the legs moreover are shorter and stouter, especially the tibiae. 

 From maculatus the D. affinis is distniguished by its larger size 

 and much broader form. Length 2| lines. 



There are two foreign specimens of Cure, affinis in the collec- 

 tion of Mr. Kirby from Gyllenhal, and five Swedish examples in 

 my possession from Schonherr and Chevrolat. 



The only British specimen that I have seen of this insect was 

 found by the K,ev. H. Clark in the latter end of May, in an ex- 

 cursion to Gamlingay, Cambridgeshire ; it occurs in Sweden on 

 the trunks and leaves of Populus tremula. 



6. D. tceniatus, Fab., Gyll., Staph., Schouh. 



Very much like the small varieties of D. maculatus, but di- 

 stinct ; its form is altogether more slender, and it is subject to 

 vei'y little variation in size. It may be distinguished at once 

 from its congeners by having the rostrum faintly carinated, and 

 finely rugose- striate ; the elytra with scattered, short, suberect, 

 black hairs towards the apex ; the legs comparatively short and 

 slender, and the femora armed with a smaller tooth. Length 

 If -2 lines. 



The late M. Schonherr supplied me with a foreign specimen 

 of Z). tmiiatus, which agrees with my British specimens. 



First discovered as a British insect I believe by Mr. R. N. Gre- 

 ville, who found a number of specimens in winter, under the 

 loose bark of a willow-tree near Northampton, and subsequently 

 many others, under firmer bark of the same tree, in the begin- 

 ning of August ; he searched carefully for it on the leaves of that 

 and other willow-trees in the neighbourhood, but without suc- 

 cess ; since taken sparingly in the crevices of the sound bark by 

 the Rev. H. Clark. 



7. D. Salicis, Walt. 



Oblong-ovate, rufo-ferruginous, v«th the head, rostrum, and 

 breast black ; sparingly clothed with cinereous pubescence, and 

 maculated on the elytra. Head small, subglobose, thickly punc- 

 tulated, the frons channeled ; eyes oval, moderately prominent, 

 black ; rostrum rather thick, as long as the head and thorax, ru- 

 gulose-striate, pubescent, black, with the apex testaceous. An- 

 tennae rufo-ferruginous, the clava black. Thorax short, as broad 

 as long, dilated and equally rounded at the sides, a little convex 



