DESCRIPTIONS OF GENERA AND SPECIES. 239 



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

 Stazione di Entomologia agraria di 

 Firenze,' vol. Ixxxiv, p. 72, pi. ii, fig. 3. 

 1888. " Eelazione, etc.," in * Ann. di Agri- 

 col tura/ p. 479. 



Acarus siro, 1841. Koch, D. C., fasc. xxxii, No. 24. 

 ? Acarus cubicularis, 1841. Koch, D. C., ibid., No. 23. 

 ? Sarcoptes hippopodos, 1835. Hering, ' Die Kratzmilben/ p. 607. 

 ? Glyciphagus hippopodos, 1841. Gervais, " Notes sur quelques 



especes, etc.," in ' Ann. Sc. Nat.,' ser. 2, 

 vol. xv, p. 8, pi. ii, fig. 4. 

 ? Glycyphagus prunorum, 1835. Hering, ' Die Kratzmilben,' p. 619. 



Sed non 



Acarus domesticus, 1798. Latreille, " Hist. nat. des Crust, et des 

 Insect.,' Paris, vol. vii, p. 400. 1806. ' Gen. 

 Crust, et Insect.,' Paris, vol. i, p. 158. 



Nee Acarus domesticus, 1843. Dujardin, * Observateur au Micro- 

 scope/ p. 151. 



1834. Duges, "Recherches sur les Aca- 



riens/' 3me mem. in * Ann. Sci. Nat./ ser. 

 2, vol. ii, p. 40. 

 ,, Contarini, ' Cataloghi/ p. 16. 



Megnin* considers that this species is identical with 

 Acarus cubicularis, Koch, which is not improbable, and 

 with Glycyphagus prunorum, Hering, f and Sarcoptes 

 hippopodus, Hering, { which is possible, although I do 

 not think that anyone can say with certainty; and also 

 with Acarus' destructor, Schranck, Acarus dimidiatus, 

 Hermann, || Acarus setosas, Koch,^[ and Acarus hyalinus, 

 Koch;** all of which seem to me to be quite different 

 creatures. 



Fumouze and Robintt say that Acarus destructor, 

 Schranck, is a Glycyphagus, but seem doubtful whether 

 it should be identified with this species or not. 



Monier (loc. cit.) says, probably correctly, that this 



* ' Les Parasites et les Maladies parasitaires/ p. 139. 



t " Die Kratzrnilben der Thiere," ' N. acta'Ac. Leop./ vol. xviii, p. 

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



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



" Enumeratio Insect. Austrise," ' Augusta Vindelicorum/ 1781, sp. 

 1057. 



|| ' Memoire apterologique/ Strasbourg, 1804, p. 85. 



*f 1841, Koch, D. C., fasc. xxxiii, No. 3. 



** Ibid., fasc. xxxii, No. 19. 



ft Loc. cit., p. 274. 



