DISTRIBUTION OF COLEOPTERA. 97 



44. P. impressus Panz.. var. spleudidulns Mots. 



The variety occurs at Sitka and Karatschatka according to Mot- 

 chulsky, Mot. 138. P. perforatiis Lee. described from JNIethy, Hud. 

 Bay Tei'r., on comparison, may jirove to be this species. LeConte 

 (Bull. B. ii, f)''), P. inipressns inhabits Arctic, western and eastern 

 Siberia to Kamtschatka ; also Europe. Heyden, 28 ; Heyden, 1886. 



45. P. Mulleri Hbst., parumpunctatust Fab., planipennis Mot. 



If the last synonym is correct, as per Munich Cat. 374, this species 

 occurs at Sitka. Siberia (Tobolsk). Arctic and central Europe. 

 This is a fine species. Bull. B. ii, 52 ; Mot. 137 ; Heyden, 28. 



46. P. Bogemanni GylL, borealis Mot., obsolettis Say, placidns j Lee. strigicollis 

 Mann. 



Dr. LeConte hesitated to unite obsoletas with Bogemanni, having 

 only one specimen of the latter f)r C(jmparison. I have compared 

 six individuals from Sweden with about fifty of ob^oletas with the 

 result of discovering no permanent character by which they may be 

 separated. Obsoletm is distributed generally throughout the United 

 States, Canada and British Columbia to Alaska. Northern Europe. 

 Eastern Siberia. Salair, western Siberia. Bull. B. ii, 52 ; Heyden. 

 30. 



47. P. quadripunctatus Dej., stigmosus Lee, octocolus Mann. 



This species is abundant in New York, Canada, Michigan, Wis- 

 consin, Lake Superior region, Alaska and the Rocky Mountains to 

 New Mexico. Central and northern Europe. E. and W. Siberia. 

 P. vii, 58; Bull. B. 57; Mots. 140; Heyden, 30; Chaud. 226. P. 

 octocolus, according to Heyden, is not a synonym of A-punctatus, but 

 is placed in the subgenus Balenus Mots. It occurs from Dauria to 

 Kamtschatka. Heyden, 28. 



48. Blechrus nigrinus Mann., linearis Lee. 



According to Horn (T. xiii, p. ix) this species is " very probably 

 B. glabratus Diifts." It occurs in Canada, New York, Michigan, 

 Wisconsin, the Rocky Mountains, California, Vancouver. T. x, 134. 

 B. glabratus inhabits central and northern Europe. Not rare in 

 the Kirg. Steppes and in Siberia. Mots. 60; Heyden, 17. 



49. Plochionus pallens Fab., valens Lee, Bonfilsii Dej. 



This species is not of common occurrence in the interior, but being 

 " diffused by commerce over the entire globe, it is found near all 

 cities of our sea-board visited by foreign vessels." Horn, T. x. 146. 



TRANS. AM. ENT. SOC. XVI. (13) APRIL, 1SS9. 



