NORTH AMERICAN SPECIES OF THE GENUS ATAX 253 



Claparede, Edouard. 



68. Studien an Acariden. Zeitschr. fur wiss. Zool., xviii, pt. 4, 

 1868, 446-480. 



Describes fully the development of A. ypsilophorus; describes A. 

 Bonzi. 



Daday, Eug. V. 



97. Die Fauna des Balatonsees. x. Wassermilben (Hydrachniden). 

 Result wiss. Erforsch. Balatonsees ii, pt. 1, 195--205. 

 Describes Atax Hungaricus,=Cochleophorus spinipes (Mull. ), juv. 



98. Mikroskopische Siisswasserthiere' aus Ceylon. Terrnezetr. 

 FuzeteF.,xxi, 1898, 123 pp., 55 text figures. 



Describes Atax nodosus and A. singalensis, of which A. 



nodosus belongs to Cochleophorus. 

 Dana, (J as. D.) and Whelpley (J as.). 



36. On two American Species of the genus Hydrachna. Silliman's 



Amer. Jour. Sci. xxx, 1836, 354-359. Plate. 



Describes Hydrachna formosa (= A. ypsilophorus) and H. pyri- 



formis (spec, undet.). 

 Duges. Alf. 



84. Naturaleza Mexico, vi, 344. 



Atax Alzatei, n. sp. (is a Curvipes). 

 Duges, Antoine. 



34. Recherches sur l'ordre des Acariens. Deuexieme Memoire. Re- 

 marques sur la famille des Hydracnes. Ann. Sci. Nat. 2me Serie 



i, Zool., 1834, 144-174, PI. x, xi. 



Restricted genus Atax by separation of Diplodontus and Arren- 



tcrus, but as types of Atax gives Hydrachna histrionica Herm. (a 



Limnesia) and H. lutescens Herm. (a Piona). 

 Fabricius, Joh. Chr. 



1792. Entomologia Systematica, etc. Hafniae, 1792-1794, 4 vols. 



In vol. ii, pp. 398-406, gives all of Miiller's species but H. gros- 



sipes, under the genus Trombidium. 

 05. Systema Antliatorum, etc. Brunsvigae, 1805. 



Establishes genus Atax (= Hydrachna, Miiller). 

 Garner, R. 



64. On a Parasitical Acarus of the Anodon. Rept. 33d Meet. Brit. 



Ass. Adv. Sci. Notices, 114. 



A. ypsilophortis causes growth of pearly prominences on inside 



of shell. 

 Girod, Paul. 



89. Recherches anatomiques sur les Hydrachnides parasites de 



l'Anodonte et de l'Unio, Atax ypsilophorus et Atax Bonzi. Bull. 



Soc. Zool. France, xiv, 1889, 107-110. Jour. Roy. Mic. Soc. Lond., 



1889, 746-747 (abstract). 

 93. Recherches sur la respiration des Hydrachnides parasites. 



Assoc, frang. Avanc. Sc. 22 Sess. Besangon, pt. 1, 248. 



