SYNOPSIS OF THE ROTATORIA. 43 



EMBATA LATICEPS (Murray). 



Philodina laticeps Murray, Trans. Royal Soc. Edinburgh, vol. 41, 1905, p. 381, pi. 7, 



fig. 11. 

 Emhata laticeps Brtce, Joum. Quekett Micr. Club, ser. 2, vol. 11, 1910, p. 76. 



EMBATA LATICORNIS (Murray). 



Philodina laticomis Murray, Trans. Royal Soc. Edinburgh, vol. 41, 1905, p. 380, pi. 7, 



fig. 12. 

 Emhata laticomis Bryce, Joum. Quekett Micr. Club, ser. 2, vol. 11, 1910, p. 76. 



EMBATA PARASITICA (Giglioli). 



? Siphonostoma parasiticum Zenker, De Gammari pulicis hist, nat., 1832, p. 19, 

 fig. Y. Type (monotype) of genus Siphonostoma Zenker, 1832; not Siphonos- 

 toma Svvainson, 1840, Mollusca (=Guilding, manuscript name); not Siphonos- 

 toma Rathke, 1842, Annulata; not Siphonostoma Kaup, 1856, Pisces. 



Callidina parasitica Giglioli, Quart. Joum. Micr. Sci., n. ser., vol. 3, 1863, p. 237, 

 pi. 11. 



Emhata parasitica Bryce, Joum. Quekett Micr. Club, ser. 2, vol. 11, 1910, p. 76. 



Genus ENCENTRUM Ehrenberg. 



Encentrum Ehrenberg, Infusionsth., 1838, p. 450. No species named. 



Type (by present designation). — Encentrum marinum {T>uja,r din) =Furcularia 

 marina Dujardin. 



De Beauchamp suggests in Arch. Zool. Exp6r., ser. 4, vol. 10, p. 

 225, the union in one genus of the following species: Furcularia 

 marina Dujardin, Pleurotrocha marina Bergendal, PleurotrocTia littora- 

 lis Levander, Pleurotrocha hidentata Lie-Pettersen, Proales felis 

 (Miiller), Distemma fordpatum Ehrenberg, Distemma raptor Gosse, 

 Diglena clastopis Gosse, Diglena rosa Gosse, Diglena rousseleti Lie- 

 Pettersen, and TapTirocampa saundersiae Hudson. As Ehrenberg 

 proposed the genus Encentrum for Distemma-s-pecies with forcipate 

 trophi, it seems advisable to utiUze this name for the proposed group, 

 as Distemma is a synonym for DicranopTiorus Nitzsch. A thorough 

 revision is badly needed, but difficult, as the original descriptions are 

 in most cases very vague. 



Diglena hidentata (Lie-Pettersen). 



Pleurotrocha hidentata Lie-Pettersen, Bergens Mus. Aarb., 1905, No. 10, p. 32, 

 pi. 2, fig. 6, 7. 



Diglena hidentata v. Hofsten, Zool. Bidr. Uppsala, vol. 1, 1912, p. 210, text fig. 

 Diglena caudata Ehrenberg. 



? Vorticellafurcata Mxjller, Verm. Terr. Fluv., vol. 1, pt. 1, 1773, p. 110. 



? Brachionus hicaudatus Schrank, Beytr. Naturg., 1776, p. 105, pi. 4, figs. 17, 18. 



? Trichoda hilunis Muller, Anim. Infus., 1786, p. 204, pi. 29, fig. 4. 



? Furcularia fur cata Lamarck, Hist. Nat. Anim. sans Vert., vol. 2, 1816, p. 39. 



? Diurella lunulina Bory de St. Vincent, Diet. Class. Hist. Nat., vol. 5, 1824, p. 

 56S= Trichoda hilunis renamed. 



? Furcocerca serrata Bory de St. Vincent, Diet. Class. Hist. Nat. vol. 7, 1825, p. 

 83= Vorticellafurcata renamed. 



Diglena caudata Ehrenberg, Abh. Akad. Wiss. Berlin (for 1833), 1834, p. 205. 



Diglena hiraphis Gosse, Ann. Mag. Nat. Hist., ser. 2, vol. 8, 1851, p. 200. 

 Diglena cirdnator Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 50, pi. 19, fig. 4. 



