94 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



SACCOBDELLA NEBALI^ van Beneden and Hesse. 



Saccobdella nebalise van Beneden and Hesse, Mem. Acad. Royale Belgique, vol. 34, 

 No. 1, 1864, p. 49, pi. 4, figs. 1-14. 



Genus SCARIDIUM Ehrenberg. 



Scandium Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 47. 



Type (monotype). — Scandium longicaudum (Miiller) = Trichoda longicauda Miiller. 



SCARIDIUM EUDACTYLOTUM Gosse. 



Scandium ewdactylotum Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 74, pi. 21, 

 fig. 4. 



SCARIDIUM LONGICAUDUM (Miiller). 



Trichoda longicauda Muller, Anim. Infus., 1786, p. 216, pi. 31, figs. 8-10. 

 Vaginaria longicavdata Schrank, Fauna Boica, vol. 3, pt. 2, 1803, p. 139. 

 Trichocerca longicauda Lamarck, Hist. Nat. Anim. sans Vert., vol. 2, 1816, p. 25. 

 Vaginicola longicauda Schweigger, Handb. Naturg., 1820, p. 407. 

 Furcularia longicauda Bory de St. Vincent, Class. Anim. Micr., 1826, p. 70. 

 Scandium longicaudum Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 47. 

 Scandium longicaudum maculatum Bergendal, Acta Univ. Lundensis, vol. 28, 1892, 

 sect. 2, No. 4, p. 110. 



Genus SCEPANOTROCHA Bryee. 



Scepanotrocha Bryce, Journ. Quekett Micr. Club, ser. 2, vol. 11, 1910, p. 74. 

 Type (by present designation). — Scepanotrocha rubra Bryce. 



SCEPANOTROCHA CORNICULATA Bryce. 



Scepanotrocha corniculata Bryce, Journ. Quekett Micr. Club, ser. 2, vol. 11, 1910, 

 p. 79, pi. 2, fig. 2. 



SCEPANOTROCHA RUBRA Bryce. 



Scepanotrocha rubra Bryce, Journ. Quekett Micr. Club, ser. 2, vol. 11, 1910, p. 78, pi. 2, 

 fig. 1. 



Genus SCHIZOCERCA Daday. 



Schizocerca Daday, Math. Term. Ert., vol. 1, 1883, p. 291. 

 Type (monotype). — Schizocerca diversicornis Daday. 



SCHIZOCERCA DIVERSICORNIS Daday. 



Schizocerca diversicornis Daday, Math. Term. Ert., vol. 1, 1883, p. 291. 

 Brachionus amphifurcatus Imhof, Zool. Anz., vol. 10, 1887, p. 578. 

 Schizocerca diversicornis homoceros Wierzejski, Bull. Soc. Zool. France, vol. 16, 1891, 

 p. 51, fig. 2. 



Genus SEISON Grube. 



Seison Grube, Jahresber. Schlesischen Ges. Vaterl. Cultur, vol. 37, 1859, p. 25. 

 Type (monotype). — Seison nebalise Grube. 



SEISON ANNULATUS Claus. 



Seison annulatus Claus, Festschr. Zool.-Bot. Ges. Wien, 1876, p. 78, pi. 2, figs. 11, 12. 



SEISON NEBALI.E Grube. 



Seison nebalise GnvB^, Jahresber. Schlesischen Ges. Vaterl. Cultur, vol. 37, 1859, p. 25. 

 Seison grubei Claus, Festschr. Zool. Bot. Ges. Wien, 1876, p. 78, pi. 1, figs. 1-5; 

 pi. 2, figs. 6-10. 



