80 COLEOPTERA. 



they ought to have been accompanied, according to Thom- 

 son ; and, if the latter has any weakness (for his work is 

 most admirable, and exhibits an originaHty and keenness of 

 discernment seldom to be met with) it is his tendency to 

 attach an undue importance to trifling differences in sculpture 

 or colour. 



COLYMBETES SEXDENTATUS, SchiodtC. 



Agabus sexualis, Reiche. 

 Heterocerus arenarius, Kiesnw. 

 Choleva longula, Kelln. (hitherto considered a var. of 



tristis). 

 pilicornis, Thorns. 



Colon Viennense, Herbst. 



SERRiPES, Sahib. 



fem.fusculunif Er. 



Zebei, Kr. 



— rufescens, Kr. 



angulare, Er. 



Hydnobius puxctatus, Sturm. 



spinipes, Gyll., Thorns. 



Anisotoma Triepkii, Schm. 



PICEA, 111. 



SlLESIACA, Kr. 



? arctica, Th. 



rubiginosa, Schm. (re-introduced). 



sciTA, Er. 



Cyrtusa pauxilla, Schm. 

 Agaricophagus conformis, Er. 



LlODES AXILLARIS, Gyll. 



AgathidiujI piceum, Er. 



