400 BULLETIN 120, UNITEP STATES NATIONAL MUSEUM. 



*B. horea^ Bairtl and Girard, No. 48645, 48646. 41 and 52 mm. long; Head of 

 Moose River; British Columbia; July 13; J. H. Riley; many Opalina obtri- 

 gonoidea maxima, the smaller specimen held also many Balantidhim. 



*No. 50915, 76 mm. long; Haines, Alaska; August 6, 1913; E. P. Walker; 



myraids of Opalina obtrigonoidea maxima, also Balantidium. 

 * No. 50917, 38 mm. long ; same label ; Opalina obtrigonoidea maxima of 



smaller size, also Balantidium. 

 " *No. 50914. 82 mm. long ; same label ; a few cysts only. 

 No. 50916, 51 ram. long; same label; no Opalinlds ; a few huge Balantidium. 

 *Nos. .50918, 50919, each 70 mm. long; female with eggs; Boca de Quadra, 

 Alaska; August 30, 1913; E. P. Walker. One of these was uninfected, 

 the other held a tremendous number of Opalina obtrigonoidea maxima, 

 the heaviest infection I have ever seen. 

 No. 48647, 82 mm. long ; female with eggs ; Henry House, Alberta ; Septem- 

 ber 7; J. H. Riley; no Opalinids. 

 No. 48636, '61 mm. long; Moose Lake. British Columbia; August 4, 1911; 



N. Hollister; no Opalinids. 

 *?No. 48637, 42 mm. long; same label; "a very few stocky Opalinids" is 

 recorded in my notes, but in working over the material I do not again 

 find them. 

 *No. 48638, 61 mm. long; same label; a very few Opalina obtrigonoidea 



maxima. 

 No. 48624, 70 mm. long ; Prairie Creek, Alberta, Canada ; July 3 ; J. H. 



Riley; no Opalinids. 

 *No. 48625, 57 mm. long; Athabasca, Canada; July 4, 1911; J. H. Riley; 

 a single large Opalina obtrigona m-axima. 

 *B. bufo (Linnaeus) [=B. vulgaris], many observers report from Europe in this 

 toad Cepedea dimidiata, and Opalina ranarum, and Collin reports Opalina 

 cincta from Viarmes, France. 

 *B. bnfo asiaticus (Steindachner), No. 21214, 105 mm. long; female with eggs; 

 Seoul, Korea ; August 8, 1883 ; P, L. Jouy ; numerous Protoopalina axonucleata. 

 *No. 21215, 51 mm. long; same label; a few Protoopalina axonucleata. 

 *No. 52355, 64 mm. long, also No. 52353; southern Manchuria; A. de C, 



Sowerby; Opalina [bufoxena]. 

 *No. 52356, 51 mm. long; same label; a few Protoopalina axonucleata. 

 *No. 46617, 101 mm. long; Shanghai, China; D. C. Jansen ; a few Opalina. 

 *No. 49642, 72 mm. long ; 20 miles southeast of Tai Yuan Fu, Shensi, China ; 

 2,300 feet altitude ; September 9, 1911 ; A. de C. Sowerby, many Opalina 

 of a species not determined. The parasites in this very abundant infec- 

 tion are so crowded together and distorted that one can not properly 

 study them. They seem to be Opalina [bufoxena']. 

 *B. calamita Laurenti, Brumpt (1915) reports Protoopalina intestinalis from 

 an unnamed locality. 



*Collin (1913) reports cysts of some Opalinid from this host at Montpellier, 

 France. 

 *?/?. canaliferus Cope, No. 10022, 42 mm. long; female with eggs 1 mm. in 

 diameter, Tehuantepec, Mexico, F. Sumichrast, 2 individuals, seemingly of 

 some species of Cepedea, were seen, but were lost. 

 B. coccifer Cope, No. 25233; "near Guatemala"; Van Patten; no Opalinids. 

 No. 51775, Tuchitan, Mexico; F. Sumichrast; no Opalinids. 



