46 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



Enteroplea hydatina Ehrenberg, Hemprich and Ehrenberg, Symb. Phys. Anim. 



Evert., 1831, Phytozoa Polypi, fol. b (second page). 

 ? Hydatina chilensis Schmarda, Neue Wirbell. Thiere, 1859, vol. 1, p. 51, pi. 12, 



fig. 103. 

 ? Hydatina macrognatha Schmarda, Neue Wirbell. Thiere, 1859, vol. 1, p. 51. 

 Hydatina monops Hilgendorf, Trans. New Zealand Inst., vol. 31, 1899, p. 114, pi. 8, 



fig. 3. 

 ? Hydatina oblonga Daday, Math. Term. Ert., vol. 26, 1908, p. 33. 



As explained under Hydatina, this name is preoccupied ; compari- 

 son with Epiphanes clavulata (Ehrenberg) does not reveal any differ- 

 ence that would warrant the creation of a new genus for this species. 

 It should be added that the generic identity of the two species was 

 suggested by Wesenberg-Lund, Vidensk. Meddel. Naturh. Foren. 

 Kj0benhavn, 1899, without his having had the opportunity of ex- 

 amining EpipJianes clavulata (Ehrenberg). 



Species of uncertain position : 



Notops forcipita Glasscott, Proc. Royal Dublin Soc, n. ser., vol. 8, 1893, p. 79, pi. 6, 



fig. 5. 

 Notops macrourus Barrois and Daday, Math. Term. Ert., vol. 12, 1894, p. 226, pi. 7, 



figs. 7, 16. 

 Notops quadrangularis Glasscott. 



Notops quadrangularis Glasscott, Proc. Royal Dublin Soc, n. ser., vol. 8, 1893, 

 p. 43, pi. 3, fig. 3. 



Furcularia quadrangularis Murray, Trans. Royal Soc. Edinburgh, vol. 45, 1906, 



p. 180. 



ERETMIA Gosse. 



Murray, Trans. Royal Soc. Edinburgh, vol. 45, 1906, p. 182: according to Rousselet, 

 the various "species" of this genus are Rhizopod shells, into which a rotifer has 

 somehow managed to get in. 



The following names have been used : 



Eretmia cubeutes Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 128, pi. 29, 



fig. 11. 

 Eretmia pentathrix Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 128, pi. 29, 



fig. 12. 

 Eretmia tetrathrix Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 134, pi. 28, fig. 1. 

 Ertemias (misprint?) tetrathrix Kood, Sci. Goss., vol. 24, 1888, p. 27, fig. 

 Eretmia trithrix Gosse, Hudson and Gosse, Rotifera, 1886, vol, 2, p. 134, pi. 28, fig. 2. 



Genus EUCHLANIS Ehrenberg. 



Euchlanis Ehrenberg, Abh. Akad. Wiss. Berlin (for 1831), 1832, p. 131. 



Type (by designation of Ehrenberg, Infusionsth., 1838, p. 464). — Euchlanis dilatata 



Ehrenberg. 



EUCHLANIS ALATA Voronkov. 



Euchlanis alata Voronkov, Ann. Mus. Zool., St. Petersburg, vol. 16, 1912, p. 210, 



text fig. 



EUCHLANIS DEFLEXA Gosse. 



Euchlanis deiexa Gosse, Ann. Mag. Nat. Hist., ser. 2, vol. 8, 1851, p. 200. 



