616 SIR JOHN LFBBOCK ON 



On some Spitzbergen Gollemlola. By the Et. Hon. Sir John 

 Lubbock, Bart., M.P., F.E.S., D.C.L., &c. 



[Read 5tli May, 1898.] 



Owing to the well-known tolerance of cold by tbe insects 

 belonging to the order CoUembola, it is not surprising that 

 several species should occur in Spitzbergen. In Greenland 

 eleven species have been recorded by Meinert * ; but, so far as 

 I am aware, only 5 species have been previously recorded from 

 Spitzbergen. The first was originally described by Boheman t 

 as Podura hyperborea, but, as I have shown elsewhere $, it is a 

 species of Achorutes. Five species were added to the Spitz- 

 bergen list by Tullberg § : they are Sminthurus Malmgreni, Tullb., 

 Isotoma palustris (Grael.), Achorutes viaticus, Tullb., Lipura 

 arctica, Tullb., and Lipura groenlandica, Tullb. I am now able 

 to add two more species, of which one is new. They were 

 collected, with specimens of two other species, by Mr. Trevor- 

 Battye during Sir Martin Conway's expedition to Spitzbergen 

 in 1896. 



Genus I. Isotoma, Bourlet, 1839. 

 Species 1. Isotoma spitzbeegenensis, n. sp. 



Diagnosis. — Pilosa. Antennae capite non velpaullo longiores, 

 arcticulus tertius quartusque sequales, secundo longiores. Tibiae 

 sine setis tenentibus. Unguiculus superior non dentatus. Seg- 

 mentum tertium abdominale quartum longitudine fere sequans. 

 Furcula usque ad tubum ventralem pertinens. Dentes furculae 

 manubrio non longiores, recti ; mucrones tridenticulati i|. Long. 

 2-2| millim. 



Habitat, Dickson Bay, Spitzbergen. Collected July 1896. 



* Fr. Meinert. " Neuroptera, Pseudoneuroptera, Thysanopoda, Mallo- 

 phaga, CoUembola, Suctoria, Siphunculata Grcenlandica," Vidensk. Meddel. 

 1896 (1897), pp. 167-173. 



t C. H. BoiiEMAN. " Spetsbergens Insekt- Fauna," Ofvers. K. Vet.-Akad. 

 Handl. vol. xxii. 1866, p. 577. 



I Lubbock. Monograph of the CoUembola and Thysanura, p. 180. 



§ T. Tullberg. " CoUembola borealia," Ofvers. K. Vet.-Akad. Handl. 

 vol. xxxiii. 1876, no. 5, p. 42. 



II It has been usual to count the terminal point as a tooth. This seems 

 hardly correct ; but I have thought it best to use the usual nomenclature. 



