SYNOPSIS OF THE ROTATORIA. 39 



DISTYLA Eichwald. 



Distyla Eichwald, Bull. Soc. Imp. Nat. Moscou, vol. 20, 1847, pt. 2, p. 345. 

 Type (monotype). — Distyla weissei Eichwald. 



As the type of Eichwald' s genus Distyla is unrecognizable, and 

 certainly not congeneric with the species of Eckstein's "genus" of 

 1883, these have been transferred to the genus Lecane Nitzsch. It 

 does not appear, that there are sufficient differences to separate the 

 two groups generically. 



Eichwald' s type bears some resemblance to a Monostyla, but has 

 two small toes; v. Hofsten, Zool. Bidr. Uppsala, vol. 1, 1912, p. 189, 

 refers it to Pleurotrocha reinJiardti. 



Distyla weissei Eichwald, Bull. Soc. Imp. Nat. Moscou, vol. 20, 1847, pt. 2, p. 345, 

 pi. 9, fig. 6. 



Genus DIURELLA Bory de St. Vincent. 



Diurella Bory de St. Vincent, Diet. Class. Hist. Nat., vol. 5, 1824, p. 568. 



Type (by present designation). — Diurella tigris (Muller) = Tnc/jorfa tigris Mtiller. 



DIURELLA BRACHYURA (Gosse). 



Monocerca brachyura Gosse, Ann. Mag. Nat. Hist., ser. 2, vol. 8, 1851, p. 199. 



Diurella rattulus Eyferth, Einf . Lebensf ., 1878, p. 85. 



Coelopus brachyurus Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 69, pi. 20, 



fig. 21. 

 Acanthodactylus rattulus Tessin, Arch. Naturg. Mecklenburg, vol. 43, 1890, p. 155. 

 Rattulus palpitatus Stokes, Ann. Mag. Nat. Hist., ser. 6, vol. 18, 1896, p. 25, pi. 8, 



fig. 19. 

 Diurella brachyura Jennings, Bull. U. S. Fish Comm., vol. 22 (for 1902), 1903, p. 317, 



pi. 3, figs. 32-34. 



DIURELLA BREVIDACTYLA Daday. 



Diurella brevidactyla Daday, Ert. Term. Kor., vol. 19, No. 17, 1890, p. 19, pi. 2, fig. 13. 



DIURELLA CAVIA (Gosse). 



Coelopv^ cavia Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 69, pi. 20, fig. 22. 

 Diurella cavia Jennings, Bull. U. S. Fish Comm., vol. 22 (for 1902), 1903, p. 317, 



pi. 3, figs. 35, 36. 

 Diurella bidens Lucks, Siisswasserfauna Deutschlands, pt. 14, 1912, p. 130, text fig. 



DIURELLA COLLARIS (Rousselet). 



Rattulus collaris Rousselet, Journ. Quekett Micr. Club, ser. 2, vol. 6, 1896, p. 266, 



pi. 11, fig. 1. 

 Diurella collaris Jennings, Bull. U. S. Fish Comm., vol. 22 (for 1902), 1903, p. 319, 



pi. 14, fig. 127. 



DIURELLA DIXON-NUTTALLI Jennings. 



Diurella dixon-nuttalli Jennings, Bull. U. S. Fish Comm., vol. 22 (for 1902), 1903, 



p. 318, pi. 4, figs. 40^4. 

 Coelopus inermis Lindee, Rev. Suisse Zool., vol. 12, 1904, p. 240, pi. 4, fig. 9. 

 Diurella inermis Sachse, Susswasserfauna Deutschlands, pt. 14, 1912, p. 130, text fig. 



