5o6 ON SOME NEW AND RARE BRITISH COLLEMBOLA 



a most interesting note on the occurrence of Pseudosinella 

 cavei'iiaTvm, which he found commonly in the burrows of 

 bees ( Andreua) and in worm holes on the banks of the 

 Tyne at Ormiston. 



In his first paper on the fauna of Mitchelstown Cave, 

 Ireland, Prof. Carpenter makes the suggestion that the same 

 species might be independently developed in two widely 

 separated caves. The researches of Prof. Moniez would seem 

 to support that theory ; but these blind and so-called cave- 

 species are now being found in many dark habitats, such as 

 underground burrows and nests, and one must, I think, 

 favour the alternative and more generally accepted theory.* 



Before coming to any decision on such important questions, 

 however, further material (both from above and below ground) 

 must be studied, and as Prof. Carpenter has already suggested, 

 further researches made both into the structure and distribu- 

 tion of the species and allied forms. 



Sub-Order SYMPHYPLEONA Borner 



Family SMINTHURID^ Lubbock 



Sub-Family SMINTHURIDIN^ Borner 



Genus SMINTHURIDES Borner 



Sm i nth u rides malmgreni (Tullb.), var. elegantttla Reuter. 



Found on the surface of standing water. My examples are 

 from a pond in the hills above Millport on the Greater 

 Cumbrae, from a brackish pool near St. Mary's Island, 

 Whitley Bay, and from a brackish ditch near the Greatham 

 saltmarsh, County Durham. On each occasion S. aquaticus 

 and Bourletiella novemlineaius, var. insignis, were also taken. 

 Not previously recorded from England. 



Smi nth u rides violaceus (Reuter). 



On garden paths, Winlaton. Another addition to the 

 Englisli fauna. 



* See Carpenter, Irhh Naturalint, October, 1897. 



