Omophlus is very different in habit to Cistela, iVom which it 

 has been removed by Megerle, and the variations in the trophi, 

 the shorter antennae, remote and small eyes and transverse 

 thorax, render their separation necessar3\ This genus com- 

 prises a considerable number of species, principally inhabiting 

 the South of Europe, and I know of none found so far to the 

 North as that before us, unless it be one from Siberia, named 

 by Gebler. 



O. ArmericE seems to be nearly allied to Cistela picipes of 

 Fabricius, in which the base of the antennae and the tibiae 

 alone are piceous, the elytra being testaceous ; or it may be 

 synonymous with Megerle's Pinicola or his pallidipennis^ but 

 not having access to his works I am unable to decide at pre- 

 sent. 



For specimens of this rare and interesting insect, which I 

 have named from the plant to which it seems to be attached, 

 I am indebted to my excellent friend Mr. Dale, who took 

 them the 20th of last June on the flowers of the Thrift, at the 

 Chesil Bank in the Isle of Portland. Mr. W. W. Saunders 

 showed me a specimen of Omophlus taken in August, 1833, at 

 Wyke near Weymouth, which I supposed at the time to be 

 curvipeSf but I have now no doubt that it was our new species. 



The Thri/L having been already published in pi. 298, the 

 Plant now represented is Polygonum Bistorta, the Great Bis- 

 tort. 



