DESCRIPTIONS OF GENERA AND SPECIES. 245 



It has been recorded from most parts of Europe 

 where Acari have been searched for, and it probably 

 has a much wider range. It has even been found by 

 Mr. Fisher, the botanist of the Jackson-Harmsworth 

 Polar Expedition, upon the talus at Northbrook Island, 

 Franz Joseph Archipelago. 



GLYCYPHAGUS SPINIPES,* Koch. PL VII, and PL VIII, 

 figs. 1, 2, 4, 5, 6, 11, 13, 15, 17. 



Acarus spinipes, 1841. Koch, D. C., fasc. xxxiii, No. 1. 1842, 



' Uebersi,' Heft 3, p. 119. 



1877. Canestrhii and Fanzago, " Intorno agli 



Acari italiani," in 'Atti 1st. Veneto,' ser. v, 

 vol. iv, p. 197. 

 GlycipUagus spinipes, 1867. Fuinouze and Robin, ' Mem. Acar.,' p. 



577, pi. xxiii. 



1888. Can., ' I Tiro,' p. 19. 

 ' Pros./ p. 381, pi. xxvii, fig. 1. 



1888. Michael, " Researches into the Life- 

 histories of GlycipJiagus domesticus and G. 

 spinipes," in ' J. Linn. Soc. Zool.,' vol. xx, 

 pp. 285298, pi. xvi, figs. 815. 



Glycypliagus spinipes, 1884. Berlese, ' A. M. S.,' fasc. xiv, No. 2. 

 1894. Monier, ' Notes,' p. 460. 



1898. Oudemans' * List,' p. 254. 



1899. Kramer, * Thierreich,' Lief. 7, p. 147. 



Sed non 



Glyciphagus spinipes, 1884. Targioni-Tozzetti, in ' Lavori della 

 Stazione di Entomologia agraria di Fi- 

 renze,' vol. Ixxxiv, p. 72, t. 2, fig. 3. 



Canestrini (loc. cit.) is of opinion that this species 

 is identical with Glycyphagus pronorum of Hering,f 

 and probably also with the Sarcoptes hippopodos of the 

 same author ;J if this be correct, then the species 

 should be called by one of Hering's names, probably 

 hippopodos, if the identity of that creature were certain, 

 as that appears first in Hering's book. Canestrini 

 says that he retains Koch's name of " spinipes " be- 

 cause it is the best name, which is quite true, and 



* Spina, a spine ; pes, a foot. 



f " Die Kratzmilben der Thiere," in * Acta Ac. Leop.,' vol. xviii, p. 

 619, pi. xlv, figs. 16, 17. 



J Ibid., p. 607, pi. xliv, fig. 11. 



