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Summary. 

 On Dorytomus Salicis Walton. 



While working with the Danish species of the genus 

 Dorytomus Steph. I perceived, that the species which is 

 in the Danish collections determined as Salicis Walton 

 did not agree with the description of this species in the 

 handbooks commonly used. Both in Seidlitz: Fauna 

 baltica, Kuhnt: Illustrierte Bestimmungstabellen derKäfer 

 Deutschlands, Stierlin: Die Käfer-Fauna der Schweiz, 

 Thomson: Skandinaviens Coleoptera, Fowler: Cole- 

 optera of the British Islands and Heyden, Reitter & 

 Weise: Catalogus Coleopterorum Europae Salicis is pla- 

 ced among those species (majalis Payk., salicimis Gyll., 

 rufiiliis Bedel) that have the front margin of the proster- 

 num sharply emarginate in the middle and on each side 

 of the emargination a more or less distinct longitudinal 

 elevation, while the Danish specimens have the proster- 

 num simple, shaped quite in the same manner as by 

 taeniatus Fabr. (bituberculatus Zett.), Dejeani Faust, and 

 affinis Payk. As the Danish specimens could not however 

 agree with any other species than Salicis, I tried to get 

 a correctly determined example of this species and by 

 the courtesy af Prof. Waterhouse, London, 1 got a spe- 

 cimen, which according to Mr. Waterhouse's declara- 

 tion is identical with Walton's species. This specimen 

 appeared to be quite in conformity with the Danish 

 species also and especially with regard to the front mar- 

 gin of the prosternum. 



It thus appears, that Salicis Walt, does not at all be- 

 long to those species, that have the front margin of the 

 prosternum sharply emarginate, but must be placed in 

 the group with simple prosternum. The difficulty that 

 has hitherto been supposed to exist in separating Salicis 

 Walt, and majalis Payk. consequently has quite vanished, 

 for majalis has the prosternum shaped quite as salicinus 



