30 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



Colurella compressa Lucks, Susswasserfauna Deutschlands, pt. 14, 1912, p. 183, text 



fig. 

 Column compressus Lucks, Rotatorienfaima Westpreussens, 1912, p. 116, text fig. 



COLURELLA DEFLEXA (Ehrenberg). 



Colurus deflextLS Ehrenberg, Abh. Akad. Wiss. Berlin (for 1833), 1834, p. 203. 

 ? Colurus dumnonius Gosse, Journ. Royal Micr. Soc, 1887, p. 6, pi. 2, fig. 21. 

 Colurella deflexa Diepfenbach, Susswasserfauna Deutschlands, pt. 14, 1912, p. 185, 

 text fig. 



COLURELLA OBTUSA (Gosse). 



Colurus ohtusus Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 103, pi. 26, fig. 3. 

 Colurella obtusa v. Hofsten, Ark. Zool., Stockholm, vol. 6, No. 1, 1909, p. 84. 



COLURELLA SULCATA (Stenroos). 



Metupidia sulcata Stenroos, Acta Soc. Fauna Flora Fennica, vol. 17, No. 1, 1898, 

 p. 166, pi. 2, figs. 27-29. 



COLURELLA TESSELATA (Glasscott). 



Colurus tesselatus Glasscott, Proc. Royal Dublin Soc, n. ser., vol. 8, 1893, p. 74, pi. 6, 



fig. 3. 

 Colurella tesselata v. Hofsten, Ark. Zool., Stockholm, vol. 6, No. 1, 1909, p. 84. 



COLURELLA UNCINATA (Muller). 



BracMonus undnatus Muller, Verm. Terr. Fluv., vol. 1, pt. 1, 1773, p. 134. 

 Colurella uncinata Bory de St. Vincent, Enc. M^th., Zooph. (pt. 1), 1824, p. 203. 

 Colurus undnatus Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 44. Monotype of 



genus Colurus Ehrenberg, 1830. 

 Monura micromela Gosse, Journ. Royal Micr. Soc, 1887, p. 7, pi. 2, fig. 24. 

 Colurus micromela Gosse, Journ. Royal Micr. Soc, 1887, p. 367. 



Doubtful or insufficiently described species : 



Colurus agilis Stokes, Journ. Royal Micr. Soc, 1896, p. 275, pi. 6, figs. 7-9. 



Colurus ccelopinus Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 105, pi. 26, 



fig. 4. 

 Colurus dactylotus Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 105, pi. 25, 



fig. 12. 

 Colurus dicentrus Gosse, Journ. Royal Micr. Soc, 1887, p. 6, pi. 2, fig. 22. 

 Colurus gradlis Hilgendorf, Trans. New Zealand Inst., vol. 31 (for 1898), 1899, p. 128, 



pi. 11, fig. 13. 

 Colurus incrassatus Eichwald, Bull. Soc. Imp. Nat. Moscou, vol. 20, pt. 2, 1847, p. 354, 



pi. 9, fig. 12. 

 Colurus marg&i Kertesz, Budapest Rotat. Faun., 1894, pp. 38, 52, pi. 1, fig. 7. 

 Colurus pachypodus Glasscott, Proc. Royal Dublin Soc, n. ser., vol. 8, 1893, p. 74, 



pi. 6, fig. 2. 

 Colurus pedatus Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 105, pi. 25, fig. 13. 

 Colurus truncatus Daday, Ert. Term. Kor., vol. 19, pt. 17, 1890, p. 25, pi. 2, fig. 19. 



Genus CONOCHILOIDES Hlava. 



ConocMloides Hlava, Zool. Anz., vol. 27, 1904, p. 253. 



Type (by present designation). — ConocMloides nutans (Sie\igo) = Tubicolaria natans 

 Seligo. 



CONOCEULOIDES DOSSUARTOS (Hudson). 



ConocMlus dossuarius Hudson, Journ. Royal Micr. Soc, 1885, p. 611, pi. 12, fig. 4. 

 Cephalosiphon dossuarius Hudson, Hudson and Gosse, Rotifera, 1886, vol. 1, p. 91, 



(Misprint for ConocMlus.) 

 ConocMloides dossuarius Hlava, Zool. Anz., vol. 27, 1904, p. 253. 



