48 COLEOPTERA. 



From De Marseul's notice of this species in ** L'Abeille " 

 (it appears, however, to have escaped record in his most 

 recent Catalogue), it is spread widely over France, occurring 

 on the catkins of several species of SaliXj and differs from 

 maculatus as above mentioned (except that the femora are 

 merely stated to be more robust, the tooth being particu- 

 larized as small and short, — the size to be usually a little 

 larger, — and the whole insect to be less convex), and from 

 hitiiherculatus {costirostriSf Wat. Cat.) in its larger size, 

 wider shape, thicker and shorter rostrum, and the uniform 

 spots on its elytra. 



AYhen so acute an observer as the late Mr. Walton (Notes, 

 p. 113) has stated that it is exceedingly difficult to find 

 satisfiictory distinguishing characters between specimens of 

 equal magnitude of D. cost'irostris and D. maculatus (and 

 there can be no doubt that he knew the true species of those 

 names respectively), and that he separated them with some 

 hesitation, it may be readily imagined that the existence of 

 a third and closely allied species will not render correct 

 diagnosis easier to the generality of Entomologists. I see 

 no comparison of D. S'dhermanni with D. affinisy the 

 larger size, thicker and shorter rostrum, stouter legs and 

 broader form of which, as compared with costirostris and 

 maculatus, would seem at least to deserve notice. 



A single specimen of Z>. Silbermanni is recorded, from 

 Frankfort, in Berl. Ent. Zeit., 1867, p. 379. 



51. Balaninus cerasorum, Walton, Wat. Cat. 



Lately, when naming some beetles for my friend, Mr. T. 



Wilkinson of Scarborough, I was induced, through finding 



among them a Balaninus which I could not satisfactorily 



refer to any of our recorded species, to look to the descrip- 



