THE OPALINID CILIATE INFUSORIANS, 415 



Nos. 48922 to 48924, 72, 49, and 41 mm. long; Crow Branch, Maryland; 



April 25, 1912 ; E. B. Marshall and B. A. Bean. 

 No. 11532, 80 mm. long; Michihicotan, Lake Superior; G. Barrister. 

 No. 33374, SO mm. long; Lost Lake, Indiana ; August 1, 1900; B. Evermann. 

 No. 3474, 85 mm. long; female with eggs; Highland County, Ohio; Mathews. 

 No. 39713, G7 mm. long ; Pine River, Michigan ; July 14, 1894 ; J. T. Scovell. 

 No. 33130, 73 mm. long; Owl Lake, near Mercer, Wisconsin; September 



30, 1903; H. V. Ogden. 

 No. 5377, Selkirk Settlement, Donald Guren. 



* In tadpoles, probably of this species, from' Chester, Nova Scotia, occur 



Opalina [larvarum], collected by Dr. E. Simon in the summer of 1920. 



* R. copei Boulenger, Nos. 30654, 30655, 42 and 27 mm. long ; Pico Blanco, Costa 



Rica ; W. M. Gabb ; Opalina copei. 

 No. 12289, 40 mm. long; Yucatan; Schott; no Opalinids. 

 * R. crassipes Buchholz and Peters, No. 48852, 55 mm. long; Kribi, The Cam- 

 eroons, west Africa ; from the Museum of Comparative Zoology, Cambridge, 

 Massachusetts; numerous Protoopalina africana. 



* R. cyanophlyctis Schneider, " Asia," Opalina coracoidea, reported by Bezzen- 



berger (1904). 



* R. dalmatina Fitziuger, No. 37181, 70 mm. long; female with eggs; Ti'avnik, 

 Bosnia; 1893; E. Brandis; Opalina ranarum. 



* No. 34552, Lugano, Switzerland ; June, 1904 ; L. Stejneger and G. S. 

 Miller ; Opalina ranarum. 



No. 11068, 59 mm. long ; Turin, Italy ; from Royal Zoological Museum ; no 

 Opalinids (poor condition, soft). 



* No. 11895, 60 mm. long; "Europe;" E. G. Blackford; from Liverpool 

 Aquarium ; myriads of Opalina ranarum. 



* No. 11895, another specimen, 52 mm. long; same label; Opalina ranarum. 



* R. draytonii Baird and Girard. Of numerous frogs of this species purchased 



in San Francisco, California, and said to have been collected in the vicinity, 

 one contained Zelleriella ranaxena, and two others had Opalina draytonii. 



Four specimens from south of San Francisco, California, contained no 

 Opalinids. 



Of 22 specimens examined at Friday Harbor, Puget Sound, Washington, 

 none had Opalinids. The locality from which these were collected was not 

 known. They were in captivity over a month before they were examined. 

 *No. 32721, San Francisco, California; May to June, 1865; Dall, Pease, 



and Ketchum ; Opalina draytonii. 

 No. 20379, Witch Creek, California; May, 1893; H. W. Henshaw; no 



Oplinids. 

 No. 8700, Fort Tejon, California; August, 1875; H. W. Henshaw; no 

 Opalinids. 



* Nos. 23668, 23669, 79 and 80 mm. long ; San Pedro Mountains ; Lower 

 California, Mexico; 1889; C. H. Townsend : Opalina draytonii. 



No. 23670, 76 mm. long, same label ; no Opalinids. 

 No. 9420, Puget Sound ; C. B. R. Kennerly ; no Opalinids. 

 No. 33574, 60 mm. long ; Presidio, California ; Lieut. W. P. Trowbridge ; no 

 Opalinids. 

 R. emeljanoi>i Nikolski, No. 52357, 55 nun. long ; female with eggs : Tientsin, 

 China ; A. de C. Sowerby ; no Opalinids. 

 No. 52359, 31 mm. long, same label ; no Opalinids. 



