THE OPALINID CILIATE Ils^FUSORIANS. 405 



*B. typhonms (Linnaeus), No. 25181, 25176, 16 and 32 mm. long, Bahia Solado, 

 Panama, J. F. Brausford, each infected with Zelleriella opisthocanja [of Bnfo 

 tijphonius], and Opalina panamanensis. 



No. 25177 to 25179. IG to 31 mm. long, same label, no Opalinids. 

 *B. valliccps Weigmann, No. 52279, 82 mm. long, Brownsville, Texas, January 

 1915, R. D. Camp, ZeUcricllu intermedia cuneata. 



*No. 52297, 57 nmi. long ; Brownsville, Texas ; March 31, 1915 ; R .D. Camp ; 



many Zelleriella intermedia cuneata. 

 *No. 25138, Guatemala, Berendt, a few Zelleriella intermedia cuneata. 

 *No. 24849, 63 mm. long, Guatemala, H. Hogue, a few Zelleriella intermedia 



ciineata. 

 Nos. 24847, 24848, same label, no Opalinids. 



No. 53179, 76 mm. long; New Orleans, Louisiana; May 1915, Southern 

 Biological Supply Co. ; Balantidium, no Opalinids. 

 B. variegatus (Guenther), Nos. 15123, 15124, 35 mm. long, both female with 

 eggs, Mayne Harbor, Patagonia, February 5, 1888, no Opalinids, one host con- 

 tained Balantidium. 

 *B. viridis Laurenti. Of 4 specimens from Naples, Italy, Metcalf (1909) re- 

 ported one bearing Protoopalina caudata and one with Opalina ranarum and 

 one with Ccpcdea dimidiata. Preserved material collected at the same place 

 has since yielded Ccpcdea dimidiata from each of two other specimens. 

 * B. tcoodhousi Girard, Nos. 52144 to 52146, 19 to 24 mm. long ; Arizona ; August, 

 1914 ; J. S. Ligon ; each showed a few Opalina looodhousi. 



*No. 36364, 63 mm. long ; Prove City, Utah ; June 26, 1905 ; Zelleriella [of 



Bufo n-oodJwusi] and Opalina tcoodhousi. 

 *No. 57133, 63 mm. long; Arizona; July 14, 1914; many Opalina icoodhousi. 

 No. 39686, 63 mm. long ; Provo City, Utah ; August, 1899 ; no Opalinids. 

 No. 21442. 82 mm. long; Redlands, South Dakota; August 28, 1894; no 



Opalinids. 

 No. 38051. 84 nun. long, male, Albuquerque, New Mexico, July 9, 1907, Balan- 

 tidium, no Opalinids. o. 

 No. 37968, 95 mm. long, female with eggs, Albuquerque, New Mexico, July 9, 



1907, no Opalinids. 

 No. 4(»200. 29 mm. long, Rangeley, Colorado, September 12, 1906, M. Carey, 



no Opalinids. 

 No. 40207, 57 mm. long. Rifle, Colorado, August 15, 1907. M. Carey, very 



many Balantidium, no Opalinids. 

 No. 52384, 95 mm. long, Portland, Oregon, April 30, 1913, O. J. Mure, no 



Opalinids. 

 No. 39852, 76 mm. long, female with eggs, Keosho, Missouri, April 3, T. M. 



Williams, no Opalinids. 

 No. 39S53, 70 mm. long, same label, no Opalinids. 



No. 35630, 139 nun. long, Phoen'x, Arizona, M. C. Dickerson, no Opalinids. 

 No. 9471, 139 mm. long, Arizona, no Opalinids. 

 No. 2535, 140 mm. long, Yellowstone River, July 14. 1856. Hayden, no 



Opalinids. 

 No. 4195, 127 nnn. long, female with eggs, Platte Valley, Drexler, no Opal- 

 inids. 

 *Engystomops pustulosus (Cope), No. 30254, 26 mm. long; Mexico (?); F. 

 Sumichrast; many Zelleriella [engijstomopsis]. 



