16 BULLETIN 81, UNITED STATES NATIONAL MUSEUM. 



ASPLANCHNA SIEBOLDU (Leydlg). 



Notommata. sieboldii Leydig, Zeitschr. Wiss. Zool., vol. 6, 1854, p. 24, pi. 2, figs. 15-17. 

 Apus sieboldii Schoch, Mikr. Thiere Siissw.-Aquar., 1868, pt. 2, p. 22, pi. 4, figs. 6, 7. 

 Asplanchna sieboldii Eyperth, Einf. Lebensf., 1878, p. 94. 

 Asplanchna ebbesbornii Hudson, Jour. Royal Micr. Soc, 1883, p. 621, pis. 9, 10. 

 Asplanchna hungarica Daday, Math. Term. Ert., vol. 9, 1891, p. 250, pi. 4, figs. 8, 9, 11. 

 Asplanchna sieboldii leydigii Lange, Zool. Anz., vol. 38, 1911, p. 440, figs. 

 Asplanchna sieboldii ebbesbornii Lange, Zool. Anz., vol. 38, 1911, p. 440, figs. 



ASPLANCHNA SILVESTRU Daday. 



Asplanchna silvestrii Daday, Term. Fiiz., vol. 25, 1902, p. 438, fig. 1. 



Doubtful species: 



Asplanchna syringoides Plate, Zeitschr. Wiss. Zool., vol. 49, 1889, p. 2. 

 Asplanchna triophthalma Daday, Math. Term. Ert., vol. 1, 1883, p. 292. 



Genus ASPLANCHNOPUS de Guerne. 



Asplanchnopus de Guerne, Camp. Sci. U Eirondelle, 3me ann., 1888, p. 57. 



Type (monotype). — Asplanchnopus multiceps (Schrank) =£racAioniw multiceps 

 Schrank. 



ASPLANCHNOPUS MULTICEPS (Schrank). 



Brachionus multiceps Schrank, Naturforscher, vol. 27, 1793, p. 30, pi. 3, figs. 16-19. 

 Notommata myrmeleo Ehrenberg, Abh. Akad. Wiss. Berlin (for 1833), 1834, p. 214. 

 Asplanchna myrmeleo Eyferth, Einf. Lebensf., 1878, p. 82. 



Asplanchna magnificus Herrick, Bull. Denison Univ., vol. 1, 1885, p. 60, pi. 2, fig. 2. 

 Asplanchnopus multiceps de Guerne, Camp. Sci. L' Hirondelle, 3me ann., 1888, p. 57. 

 Asplanchnopus myrmeleo Hudson and Gosse, Rotifera, Suppl., 1889, p. 15, pi. 32, 



fig. 13. 

 Asplanchna papuana Daday, Math. Term. Ert., vol. 15, 1897, p. 132, fig. 1. 



Doubtful species : 



Asplanchnopus syrinx (Ehrenberg). 



Notommata syrinx Ehrenberg, Abh. Akad. Wiss. Berlin (for 1835), 1837, p. 169. 

 Asplanchna syrinx Eyperth, Einf. Lebensf., 1878, p. 82. 



Asplanchnopus syrinx Hudson and Gosse, Rotifera, Suppl., 1889, p. 16, pi. 34, 

 fig. 37. 



Genus ATROCHUS Wierzejski. 



Atrochus Wierzejski, Bull. Acad. Sci. Cracovie (for 1892), 1893, p. 404. 

 Type (monotype). — Atrochus tentaculatus Wierzejski. 



ATROCHUS TENTACULATUS Wierzejski. 



Atrochus tentaculatus Wierzejski, Bull. Acad. Sci. Cracovie (for 1892), 1893, p. 404. 



Genus BALATRO Claparfede. 



Balatro Clapar^de, Ann. Sci. Nat., Zool., ser. 5, vol. 8, 1867, p. 12. 

 Type (monotype). — Balatro calvus ClaparMe. 



