REPORT UPON A PARASITIC PROTOZOAN. 



175 



THE PARASITE. Holophrya (Ichthyophthirius) multifiliis (Fouquet). 



SYNONYMY. 



1876. Ichthyophthirius multifiliis Fouquet. 

 1884. Chromatophagus parasiticus Kerbert. 



1887. Holophrya (I.) multifiliis (Fouquet) Biitschli. 

 1892. Ichthyophthirius cryptostomus Zacharias. 



HOSTS. 



Schlammpeitzger (Cobitis fossilis) and others, Hil- 



gendori and Paulicki, 1869. 

 Vou Belir trout (Salmo fario L.), Fouquet, 1876. 

 Tench (Tinea vulgaris var. aitrata), Kerbert, 1884. 

 Bream (Abramis brama L.), Kerbert, 1884. 

 White bream (Blicca bjorhna Sieb.), Kerbert, 1884. 

 Carp (Cyprinus caipio L., with varieties; C. rex 



cyprinorttm and C. niidns), Kerbert, 1884. 

 Goldfish (Carassins vulgaris Kroyer), Kerbert, 1884. 

 Golden ide (Idus melanotus var. miniatus Heck. & 



Kner), Kerbert, 1884. 

 Atlantic salmon (Salmo salarlj.), Kerbert, 1884. 

 Von Bebr trout (Salmo fario L.), Kerbert, 1884. 

 Brook trout (Salvelinus fontinalis Mitchill), Ker- 

 bert, 1884. 

 Brook trout (Salvelinus foutinalis Mitchill), Forbes 



& Stiles, 1893. 

 You Bebr trout (Salmo fario L.), F. & S. 1893. 

 Loch Leven trout (Salmo levenensis Walker), new 



host, 1893. 

 Rainbow trout (Salmo irideus Gibbous), new host, 



1893. 



Lake trout (S. namaycush Walb.), new host, 1893. 

 White bass (Boccus chrysops Raf. ), new host, 1893. 

 Pike perch (Stizostedion vitreum Mitchill), uew 



host, 1893. 

 Spotted cattish (Ictalurus punctatus Raf.) new 



host, 1893. 

 Young Mississippi cattish (Ameiurus nigricans Le 



Sueur), new host, 1N98. 

 Channel catfish (Ameiurus albidus Le Sueur), new 



host, 1893. 

 Yellow catfish (Ameiurus natalis Le Sueur), new 



host, 1893. 

 Marbled catfish (Ameiurus marmoratus Holbrook), 



new host, 1893. 

 Whitefish (Coregonus clupeifomis Mitchill), new 



host, 1893. 

 Large-mouthed buffalo (Ictiobus urns Agassiz), new 



host, 1893. 

 Small-mouthed buffalo (Ictiobus bubalus Raf.), 



new host, 1893. 

 Sheepshead (drchosargus probaiocephalus Walb.), 



new host, 1893. 



GEOGRAPHICAL DISTRIBUTION. 



Germany (Hamburg), Hiliyendorf & Paulicki, 



1869; (Plon), Zacharias, 1892. 

 France (Paris), Fouquet, 1876. 

 Holland (Amsterdam), Kerbert, 1884. 



United States of North America (Chicago), fish 

 came originally from the Potomac River, Forbes 

 & Stiles, 1893. 



BIBLIOGRAPHY. 

 Butschli : 



1887. Protozoa: Band I. Bronn's Klassen mid Ordnungen des Thierreichs, pp. 1584-1585, 1678-1679, 

 Taf. lvi, 10 a-d (figures after Fouquet, 1876). 

 Fouquet, D. : 



1876. Note sur une espece d'infusoires parasites des poissons d'eau douce; Archiv. d. zool. experi- 

 meiitale et g6n6rale, t. V, pp. 159-165, pi. iv, 1-11. 

 Hilgendore, F., und Paulicki, A.: 



1869. Infusionsthiere als Hautparasiten bei Siisswasserfischen ; Ceutralblatt fur die medicinischen 

 Wissenschaften, pp. 33-35. 

 Kent, W. Saville : 



1880-1882. A Manual of the Infusoria, including a description of all known Flagellate, Ciliate, and 

 Tentaculiferous Protozoa, British and Foreign. London, 3 vols. 

 Kerbert, C: 



1884. Chromatophagus parasiticus n. g. et n. sp. Ein Beitrag zur Parasitenlehre ; Nederl. Tijdsch. v. 



d. Uierk., Amsterdam, Jahrg. v, pp. 44-58, Taf. iv. 



1885. Review of 1884 in Journ. Micr. Soc. (2) v, p. 81. 



1886. Chromatophagus parasiticus. A contribution to the natural history of parasites, [translation of 



1884] by Herman Jacobson; U. S. Fish Commission Report for 1884. pp. 1127-1136, 1 pi. 

 La Valette he St. George: 



1879. Ueber die Feiudo der Fische, p. 77. (A circular of the German Fishery Association.) 

 Stii.es : 

 1894. Notes sur les Parasites — 24: Note preliminaire sur une espece d'infusoires (Ichthyophthirius), 

 parasites chez des poissons d'eau douce a l'fixposition Internationale de Chicago; Compt. 

 rend, de la Soc. de Biologie, Paris. (Contains conclusions given in the present paper.) 

 Weissmann, A. : 

 1891. Essays upon Heredity and kindred Biological Subjects. Engl. Ed., Oxford, vol. i. Essay, 

 Life and Death, pp. 150, 151, footnotes. 

 Zacharias, Otto: 

 1892a. Ein infusorieller Hautparasit bei Siisswasserfischen; C. f. B. u. P., xn, pp. 718-720. (Pre- 

 liminary notice to 1892&.) 

 18926. Ueber eine Ichthyophthirius-Art aus den Aquarien der Biologischen Station zu Plon; Fest- 

 schrift zum 70ten Geburtstage Rudolf Leuckarts. Leipzig, pp. 289-292, Taf. xxix, figs. 1-12. 



