72 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



MONOLABIS Ehrenberg. 



Monolahis Ehrenbekg, Abh. Akad. Wiss. Berlin, 1830, p. 48. 

 Type (monotype). — Monolahis conica Ehrenberg; unrecognizable. 



Monolahis conica Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 48. 



Monolahis gracilis Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, p. 146. 



Genus MONOMMATA Bartsch. 



Monommata Bartsch, Jahresh. Naturk. Wiirttemberg, vol. 26, 1870, p. 344. 



Type (by present designation). — Monommata orhis (Mtiller) as Monommata longiseta 

 (Mtiller) = Cercam orhis Miiller. 



MONOMMATA ORBIS (Miiller). 



Cercaria orhis Muller, Zool. Danicce Prodr., 1776, p. 280. 



Vorticella longiseta Mijller, Anim. Infus., 1786, p. 295, pi. 42, figs. 9, 10. 



? Trichoda hicaudata Schrank, Fauna Boica, vol. 3, pt. 2, 1803, p. 87. 



? Vaginaria hrachiura Schrank, Fauna Boica, vol. 3, pt. 2, 1803, p. 144. 



Furcocerca orhis Lamarck, Hist. Nat. Anim. sans Vert., vol. 1, 1815, p. 448. 



Furcularia longiseta Lamarck, Hist. Nat. Anim. sans Vert., vol. 2, 1816, p. 39. 



Trichocerca orhis Bory de St. Vincent, Class. Anim. Micr., 1826, p. 42. 



Lecane orhis Nitzsch, Enc. Wiss. u. Kiinste, sect. 1, vol. 16, 1827, p. 68. 



Brachionus orhis Blainville, Diet. Sci. Nat., vol. 60, 1830, p. 149. 



Trichocerca longiseta Blainville, Diet. Sci. Nat., vol. 60, 1830, p. 150. 



Notommata longiseta Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 46. 



Notommata sequalis Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, p. 134. 



Notommata longiseta inxqualis Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, 



p. 134. 

 Notommata longiseta sequalis Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, 



p. 134. 

 Scaridium longisetum Schoch, Mikr. Thiere Siissw.-Aquar., 1868, p. 30. 

 Monommata longiseta Bartsch, Jahresh. Naturk. Wiirttemberg, vol. 26, 1870, p. 344. 

 Furcularia sequalis Hudson and Gosse, Rotifera, 1886, vol. 2, p. 46, pi. 18, fig. 15. 

 Monommata aequalis Voigt, Siisswasserfauna Deutschlands, pt. 14, 1912, p. 104, text fig. 



MONOMMATA ORBIS GRANDIS Tessln. 



Monommata grandis TESsm , Arch. Naturg. Mecklenburg, vol. 43, 1890, p. 151, pi. 1, 



figs. 11, 12. 

 Furcularia longiseta grandis Rousselet, Journ. QuekettMicr. Club, ser. 2, vol. 6, 1895, 



p. 124, pi. 7, fig. 3. 

 Monommata longiseta grandis Stenroos, Acta Soc. Fauna Flora Fennica, vol. 17, 



No. 1, 1898, p. 135. 

 Monommata appendiculata Stenroos, Acta Soc. Fauna Flora Fennica, vol. 17, No. 1, 



1898, p. 135, pi. 1, figs. 33, 34. 



Genus MONOSTYLA Ehrenberg. 



Monostyla Ehrenberg, Abh. Akad. Wiss. Berlin, 1830, p. 46. 



Type (monotype). — Monostyla cornuta (Muller) = Trichoda cornuta Muller. 



MONOSTYLA ARCUATA Bryce. 



Monostyla arcuata Bryce, Sci. Gossip, vol, 27, 1891, p. 206, text fig. 



