100 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



Genus TESTUDINELLA Bory de St. Vincent. 



Testudinella Bory de St. Vincent, Class. Anim. Micr., 1826, p. 85. 

 Type (by present designation). — Testudinella clypeata (M.iJlleT)=Brachionus clypeatus 

 Miiller. 



TESTUDINELLA BIDENTATA (Temetz). 



Pterodina bidentata Ternetz, Rotat. Umg. Basels, 1892, pp. 20, 44, p. 3, fig. 23. 

 Pterodina emarginata Wierzejski, Bull. Acad. Sci. Cracovie, (for 1892) 1893, p. 407. 

 Pterodina calcaris Langer, Verh. Ver. Nat.-ii. Heilkde., Pressburg, n. ser. vol. 19, 

 1909, p. 46, fig. 3. 



TESTUDINELLA CffiCA (Parsons). 



Pterodina caeca Parsons, Journ. Quekett Micr. Club, ser. 2, vol. 4, 1892, p. 379, pi. 



25, fig. 3. 



TESTUDINELLA CLYPEATA (MUller). 



Brachionus clypeatus Muller, Anim. Infus., 1786, p. 339, pi. 48, figs. 11-14. 

 Testudinella clypeata Bory de St. Vincent, Class. Anim. Micr., 1826, p. 86. 

 Pterodina clypeata Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, p. 147. 

 Pterodina crassa Levander, Acta Soc. Fauna Flora Fennica, vol. 12, No. 3, 1894, 

 p. 57, pi. 3, fig. 40. 



TESTUDINELLA ELLIPTICA (Ehrenberg). 



Pterodina elliptica Ehrenberg, Abh. Akad. Wiss. Berlin (for 1833), 1834, p. 217. 



TESTUDINELLA INCISA (Ternetz). 



Pterodina incisa Ternetz, Rotat. Umg. Basels, 1892, pp. 20, 41, pi. 3, figs. 19, 20. 

 Pterodina emarginula Stenroos, Acta Soc. Fauna Flora Fennica, vol. 17, No. 1, 

 1898, p. 168, pi. 2, figs. 31, 32. 



TESTUDINELLA INTERMEDIA (Anderson). 



Pterodina intermedia Anderson, Journ. Asiatic Soc. Bengal, vol. 58, 1889, pt. 2, p. 

 356, pi. 21, fig. 11. 



TESTUDINELLA MUCRONATA (Gosse). 



Pterodina mucronata Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 114, pi. 



26, fig. 15. 



TESTUDINELLA PARVA (Temetz). 



Pterodina parva Ternetz, Rotat. Umg. Basels, 1892, pp. 20, 42, pi. 3, figa. 21, 22. 

 TESTUDINELLA PATINA (Hermann). 



Brachionus patina Hermann, Naturforscher, vol. 19, 1783, p. 48, pi. 2, fig. 10. 



Proboskidia patina Bory de St. Vincent, Class. Anim. Micr., 1826, p. 84. Type 

 (monotype) of genus Proboslidia Bory de St. Vincent, 1826. 



Pterodina patina Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 48. Type (mono- 

 type) of genus Pterodina Ehrenberg, 1830. 



Pterodina valvata Hudson, Monthly Micr. Journ., vol. 5, 1871, p. 26, pi. 72, figs. 1-6. 



TESTUDINELLA REFLEXA (Gosse). 



Pterodina reflexa Gosse, Journ. Royal Micr. Soc, 1887, p. 3, pi. 1, fig. 8. 



TESTUDINELLA TRILOBATA (Anderson and Shephard). 



Pterodina trilobata Anderson and Shephard, Proc. Royal Soc. Victoria, n. ser., 

 vol. 4, 1892, p. 79, pi. 12, fig. 7. 



