506 



AMERICAN MUSEUM OF NATURAL fflSTORY 



Hybrids — Cont'd. 



hybrid of A. brania andLeuciscus sp. Kner, 

 R. 1864.1. ■ — Occurrence in Germany and 

 Finland. Grube, A. E. 1867.1; Krauss, 

 F. 1863.2; Luther, A. F. 1904.1; Sten- 

 roos, E. E. 1893.1, 1895.1; Westerlund, 

 A. 1898.1. 



Abramis melanops X Rutilus rutilus, 

 {Abramidopsis rhinosimus of Jackel). 

 Jackel, A. J. 1869.1. 



Abramis brama X Scardinius erythroph- 

 thalmus. "White roach" of Lough Erne, 

 Ireland. Regan, C. T. 1908.14. 



Albumus alborella X Leuciscus cave- 

 danus. From Lake Lugano. Fatio, V. 

 1905.4. 



Albumus lucidus X Leuciscus cephalus. 

 (Albumus dolobratus of Hollandre.) Syn- 

 onymy. Fatio, V. 1882.1 (p. 452). 



Albumus lucidus X Leuciscus leuciscus. 

 Recorded. Leonhardt, E. 1904.15. 



Albumus lucidus X Leucaspius deli- 

 neatus. Artificially induced fertile hybrids 

 (Albumus leydigii). Knauthe, K. 1893.2, 

 .4, 1895.4. 



Albumus lucidus X Rutilus rutilus. 

 From R. Nene, England. Giinther, A. C. 

 1889.5. 



Albumus lucidus X Scardinius ery- 

 throphthalmus. Albumus rosenhaueri of 

 Jackel, A. J. 1865.1, 1866.1. — Scardi- 

 nopsis albumiformis o/Benecke, B. 1884.1. 

 Blicca bjoerkna X Alburnus lucidus. 

 (Bliccopsis albumiformis of Siebold). 

 Jackel, A. J. 1864.1-1866.1. —Considered 

 ' hybrid of B. bjoerkna and Abramis brama. 

 Knauthe, K. 1895.1. 



Blicca bjoerkna X Leuciscus meidingeri, 

 (Bliccopsis melanopterus of Jackel). Jackel, 

 A. J. 1869.1. 



Blicca bjoerkna X Rutilus rutilus. 

 (Abramis abramo-rutilus of Hollandre, 

 Bliccopsis of Siebold) . — Synonymy. Fatio, 

 V. 1882.1 (p. 387). —Status. Gfensoul, J. 

 1908.2; Vutskits, G. 1907.1, 1913.1. 

 — Believed to be a hybrid between Abramis 

 sp. and L. rutilus or S. erythrophthalmus. 

 Kner, R. 1864.1. 



Blicca bjoerkna X Scardinius (Leuciscus) 

 erythrophthalmus. (Bliccopsis erythroph- 

 thalmoides of JackeVj. Fatio, V. 1882.1 

 (p. 376) ; Jackel, A. J. 1864.1 ; Knauthe, 

 K. 1895.2. — Occurrence in Finland. 

 Luther, A. F. 1901.1; Stenroos, K. E. 

 1895.1. 



Carassius auratus X Barbus conchonius. 

 Artificially induced. Leonhardt, E. E. 

 1905.21. 



Cyprinus carpio X Barbus vulgaris. 

 Recorded. Defay, - 1786.1. 



Cyprinus carpio X Carassius auratus. 

 Artificially induced. Fischer, F. 1880.1. 



Cyprinus carpio X Carassius vulgaris. 

 (Carpio kollarii of Heckel) . — Considered 

 a distinct form, C. kollarii. Heckel, J. J. 

 1836.3; Heckel, J. J. & Kner, R. 1868.1; 

 Kner, R. 1864.1. — Shown to be a hybrid. 

 *Dybowski, B. J. 1864.1. — Synonymy. 

 Fatio, V. 1882.1 (p. 198). —Fertility. 

 Knauthe, K. 1893.4, 1895.4. 



Cyprinus carpio X Tinea vulgaris. Arti- 

 ficially produced. Friedel, E. 1880.2 (p. 

 333). 



Leuciscus agassizii X Chondrostoma 

 nasus. (Chondrostoma rysela of Agassiz). 



— Synonymy. Fatio, V. 1882.1 (p. 724). 



— Occurrence. Murisier, P. 1911.1. 

 Leuciscus cephalus X Chrondrostoma 



nasus. Description. Fatio, V. 1882.1 

 (p. 706). 



Leuciscus aula X Scardinius erythroph- 

 thalmus. From Lago di Varano, Italy. Bel- 

 lotti, 0. 1904.1; Chiappi; T. 1902.1. 



Rhodeus amarus X Leucaspius deli- 

 neatus. Recorded. Knauthe, K. 1896.1. 



Rutilus rutilus X Scardinius erythroph- 

 thalmus. (Scardiniopsis anceps of Jackel), 

 Gensoul, J. 1908.2; Jackel, A. J. 1864.1, 

 1865.1. 



Hybrids in Fleuronectldss 



Alleged or supposed hybrids, chiefly ex- 

 isting under natural conditions, 



Faunal treatises including accounts of 

 supposed hybrids from Baltic and North 

 Seas. Mobius, K. & Heinke, F. 1883.1; 

 Smitt, F. A. 1893.1. 



Pleuronectes limanda X Pleuronectes 

 flesus. Day, F. 1885.7. 



Pleuronectes platessa X Pleuronectes 

 limanda. Duncker, G. 1892.2. 



Pleuronectes platessa X Pleuronectes 

 flesus. (By artificial fertilization). Kyje, 

 H. M. 1900.4. 



Pleuronectes platessa X Rhombus maxi- 

 mus. Krause, K. E. 1883.1. 



Rhombus maximus X Rhombus losvis 

 (R. hybridus of Malm). Occurrence in 

 nature, of turbot and brill hybrid. Holt, 

 E. W. 1893.3; Malm, A. W. 1877.2. — 

 Artificially produced. Mcintosh, W. C. 

 1891.3. 



Hybrids In Poeciliidffi 



Hybrids in these viviparous forms, pro- 

 duced through crossing aquarium fishes. 

 Because of superfoetation, many forme}' 

 references to alleged hybrids are worthless. 



Xiphophorus helleri X Platypoecilus 

 maculatus. Male Xiph. (strigatus) and 

 female Platyp. Haffner, C. 1912.4, 1913.1. 

 — Note on this. Wolterstorff, W. G. - 

 1913.1. — The reciprocal cross; female 

 Xiph. and male Platyp; back-crossing and 

 other crosses. *Gerschler, W. M. Add. 

 1914.1-1914.3. 



Pacilia mexicana X Molliensia lati- 

 pinna. Male Pmcilia. Scheljuzhko. L. 

 1912.1. 



The citations (partly oviparous forms) 

 under Fischer, M. 1911.1; Hey, F. 1910.1; 

 Starkloff, C. 1913.1; and Thumm, J. 

 1905.1, refer chiefly to the Bl&tter fiir 

 Aguar. u. Terrar, Kunde. Search through 

 this series should disclose additional al- 



Hybrids in Salmonidee 



With the exception cited below, of Salmo 

 schiffermUUeri occurring naturally in Aus- 

 trian lakes, the numerous hybrids listed 

 here have aU been produced through artificial 



