26o 



CHAPTER III 



Mesenkin and Sopotshnoj Island, and with a series from Tolstoinos (J. Sahlberg, 1880, 

 p. 106); all localities on the eastern side of the Yenisei estuary. Though I was unable to 

 study the S genitalia, it seems clear from external characters that the species, though closely 

 related, as already supposed by Blair (1933, p. 95), are not identical. The vertex is exca- 

 vated behind the eyes in nearcticus and this concavity has a strong, striated sculpture. In 

 nordenskioldi, the vertex is truncate towards the contracted neck. 



4. The "Mycetoporus sp." of Brown (1937, p. 1 10), according to the single specimen (Mus. 

 Ottawa), is a Bryoporus of a species not occurring in Europe but related to rugipennis Pand. 

 It is possibly rufescens Lee. and I have ventured to mark the distribution as "E. North 

 America". 



5. Micralymma brevilingue Schio. A comparison between ample series of this species, 



