SYNOPSIS OF THE ROTATORIA. 13 



Genus ANARTHRA Hood. 



Anarthra Hood, Proc. Royal Irish Acad., ser. 3, vol. 3, 1895, p. 672. 

 Type (monotype). — Anarthra aptera {B.ood)=Polyarthra aptcra Hood. 



ANARTHRA APTERA (Hood). 



Polyarthra aptera Hood, Joum. Quekett Micr. Club, ser. 2, vol. 5, 1893, p. 281, pi. 



12, fig. 2. 

 Anarthra aptera Hood, Proc. Royal Irish Acad., ser. 3, vol. 3, 1895, p. 672, pi. 21, 



fig. 1. 



ANELCODISCUS Leidy. 



Anelcodiscus Leidy, only species Ajielcodiscus pellitcidus Leidy, Proc. Acad. Nat. 

 Sci. Philadelphia (for 1850-1851), 1852, p. 287; insufficiently described. 



Genus ANOMOPUS Piovanelli. 



Anomopus Piovanelli, Journ. Quekett Micr. Club, ser. 2, vol. 8, 1903, p. 522. 

 Type (monotype) . —Anomopus telphusx Piovanelli. 



ANOMOPUS TELPHUSiE Piovanelli. 



Anomopus telphusas Piovanelli, Joum. Quekett Micr. Club, ser. 2, vol. 8, 1903, 

 p. 522. 



ANTHOS Sehoch. 



Anthos ScHOCH, only species Anthos quadrilobus Sehoch, Mikr. Thiere Sussw.-Aquar., 

 1868, pt. 2, p. 20, pl."3, fig. 4; unrecognizable. 



Genus ANUR^^OPSIS Lauterborn. 



Anurseopsis Lauterborn, Verh. Naturh.-Med. Ver. Heidelberg, n. ser., vol. 6, 1900, 

 p. 441. 

 Type (monotype). — Anurseopsis fissa (Gosse) as hypelasma (Goase) = Anursea Jissa 

 Gosse. 



ANUR^OPSIS FISSA (Gosse). 



Anurasa Jissa Gosse, Ann. Mag. Nat. Hist., ser. 2, vol. 8, 1851, p. 202. 



Anursea hypelasma Gosse, Hudson and Gosse, Rotifera, 1886, vol. 2, p. 123, pi. 29, 



fig. 6—Anurica Jissa renamed. 

 Anurseopsis hypelasma Lauterborn, Verh. Naturh.-Med. Ver. Heidelberg, n. ser., 



vol. 6, 1900, p. 441, footnote. 



ANUR/EOPSIS NAVICULA Rousselet. 

 Anurxopsis navicula Rousselet, Zool. Jahrb., Syst., vol. 29, 1910, p. 669, fig. E. 



APyECIA. 



Apsecia amelia, original description not located; mentioned by Jennings, Bull. U. S. 

 Fish Comm., vol. 19 (for 1899), 1900, p. 78. 



APODOIDES Joseph. 



Apodoides Joseph, only species Apodoides stygius Joseph, Zool. Anz., vol. 2, 1879, 

 p. 62; insufficiently described. 



APSILUS Metschnikov. 



Apsilus Metschnikov, Zeitschr. Wiss. Zool., vol. 16, 1866, p. 346; not Apsilus Cuvier 

 and Valenciennes, 1830, Pisces. 



