NEW BRITISH SPECIES, ETC., IN 1868. 61 



These I now find are distinct from the latter, which, how- 

 ever, they very closely simulate. They seem to be inter- 

 mediate between it and T. melanocepkala, Gyll., and, if 

 specifically distinct from that species, as I think they must 

 be, are apparently undescribed. I have long had a single 

 and very dark specimen of the Dumfries insect in my collec- 

 tion as melanocephalaj var. extrema. 



64. PsYLLiODES NiGRicoLLis, Marsham. 



Herr Kutschera, as well as M. Allard, considers this 

 insect specifically distinct from P. chrysocephala. But they 

 occur in company, sometimes with other extreme varieties ; 

 and the statement that the thoracic punctuation is less dis- 

 tinct, and the striae of the elytra less deeply punctured, than 

 in that species, is not in the least borne out by the specimens 

 I have examined. 



Herr L. v. Heyden (loc. cit.), mentioning the insect to 

 have been recorded only from England and Dieppe, notes a 

 single specimen from Offenbach-am-Main. 



Qo. PsYLLioDES iNSTABiLis, Foudr., All.; Kutsch., Wien. 

 Monats., 1864, Beitr., 368. 



The JP, picipes of Mr. Waterhouse's Catalogue (a single 

 specimen), long suspected to be not identical with picipeSy 

 Redt., has been returned as P.instahilishy Herr Kutschera. 

 I am quite unable, beyond a slight colour diff"erence, to 

 separate this specimen from that hitherto representing picipes 

 in my own collection, and which, from possessing inter- 

 mediate links, I think is only a variety of that common 

 insect now called herbacea by Allard, but cuprea by Kut- 

 schera. 



