238 BRITISH TYROGLYPHIDyE. 



GLYCYPHAGUS DOMESTICUS,* de Geer. PL VI, and PI. 

 VIII, figs. 3, 7, 8, 9, 10, 12, 14, 16. 



Acarus domesticus, 1778. De Geer, " Memoires pour servir a 

 Fhistoire des Insectes,' Stockholm, vol. vii, 

 p. 88, No. 1, pi. v, figs. 19. 



1793. Gmellin, in Linnaeus' ' Syst. Nat.,' 



Gmellin's edition, t. i, pars v, p. 2928. 

 Contarini, ' Venezia ele sue Lagune,' vol. ii, 

 p. 162. 



1877. Oanestrini and Fanzago, " Intorno 



agli Acari Italiani," in ' Atti 1st. Veneto/ 

 ser. v, vol. iv, p. 196. 



Glycyphagus domesticus, 1884. Berlese, ' A. M. S.,' fasc. xiv, No. 3. 

 " 1894. Monier, ' Notes,' p. 459. 



1898. Oudemans' ' List/ p. 251. 

 Glyciphagus domesticus, 1888. Canestrini, * I Tiro,' p. 20 ; and 



' Pros./ p. 384. 



1888. Michael, " Researches into the 



Life-histories of Glyciphagus domesticus 

 and G. spinipes, in 'J. Linn. Soc. 

 Zoo!./ vol. xx, pp. 285298, pi. xvi, 

 figs. 17. 



? Troisieme espece de Mite, 1829. Lyonet, " Anat., etc.," in ' Mem. 



du Museum d'Hist. Nat./ Paris, p. 284, 

 pi. xii (fourth of the paper), figs. 10 



Glyciphagus cursor, 1841. Gervais, "Notes sur quelques especes de 



1'ordre des Acariens," in ' Ann. Sci. Nat./ 



ser. 2, t. xv, pp. 5 10, pi. ii, fig. 5. 

 1844. Gervais, in Walckenaer's ' Insectes 



apteres/ vol. iii, p. 264. 

 1867. Fumouze and Robin, ' Mem. Acar./ 



p. 573. 

 ? 1879. Troupeau, " Des Acariens de la Farine," 



in ' Bull. Soc. d'E tudes sci. d' Angers/ 1876-8, 



fasc. ii, p. 110, fig. 12.J 

 P1880. Megnin, < Les Para sites/ p. 139. (Me- 



gnin's figure hardly seems to be G. domesticus.) 



* Domesticus, of the house, domestic. 



f I do not think that it is possible to say for certain whether Lyonet's 

 species was G. domesticus or G. spinipes. 



I have grave doubts whether the creature referred to by Troupeau 

 was not really G. spinipes ; he draws a band near the anus reticulated 

 with hexagonal markings, and says it occurs in some specimens. These 

 hexagonal markings do occur on G. spinipes when about to assume the 

 inert condition of a case which contains the rudimentary hypopus ; 

 but they do not occur on G. domesticus. 



