THE OPALINID CILIATE INrUSORIAXS. 309 



pinae, Hemiphractinae, Amphignathodontinae^ Dcndrophryniscinae, 

 Dyscophinae^ Genophryninae^ C eratohrachinae . 



The genus Protoopalina is reported from — 

 Pisces (1 species of host, 1 species of Protoopcdina). 



Box hoops (P. saturnalis) / Mediterranean Sea. 

 Urodela (2 species of hosts, 2 species of Protoopalina). 



Amby stoma tigrmvAn {P. mitotica) ; Nebraska, United States of 



America. 

 THturus vulgaris {P. ^^ intestinalis ^^) / Europe. 

 Anura. 



Pipidae (1 species of host, 1 species of Protoopalina). 



Xenopus calcaratus (P. xenopodos) ; tropical Africa. 

 Discoglossidae (5 species of hosts, 6 species and subspecies of 

 Protoopalina). 

 Bonibina hombina {P. caudata) ; Europe. 

 Bomhina ho7iihina {P. intestinalis) / Europe. 

 Bomhina orlentalis {P. tnacrocaudata) ; Korea. 

 BoTYibina orientalis {P. orientalis) ; southern Manchuria, 



Korea. 

 Bomhina pachypa {P. caudata) ; Europe. 

 Bomhina pachypa {P. intestinalis) ; Europe. 

 Discoglossus picfus {P. caudata discoglossi) ; southern and 



western Europe. 

 Discoglossus pictus {P. i7itestinalis, doubtful identification) ; 



southern and western Europe. 

 Megalophrys nnontana {P. montana) ; Java. 

 Pelobatidae (5 species of hosts, .5 {I) species of ProtoopaXimi) . 

 Pelohates fuscus {P. pelohatidis) ; southern Europe. 

 Pelohates cultripes ("P. intestinalis''''); Montpellier, France. 

 jScaphiopus homhifo^ons {P. scaphiopodos) ; Rocky Moun- 

 tains, western North America. 

 Scaphiopus hammondii {P. hatnmondii) ; southwestern 



United States, northern Mexico. 

 Scaphiopus multiplicatus {P. niexicana) ; northern Mexico. 

 Hylidae (5 species of hosts, 5 (?) species of P rotoopalhv'^ 

 Hyla adelaidensis {P. adelaidensis) ; Australia. 

 Hyla aurea {P. '•''intestinalis^''); Australia. 

 Hyla aurea {P. hylarum) ; Australia. 

 Hyla aurea {P. australis) ; Australia. 



Hyla aurea, Cleland and Johnston (1910) report ''Opal'uia 

 sp." [doubtless a Protoopalina'] from Queensland, Aus- 

 tralia. 

 Hyla coerulea ("6>. sp.") , Australia [of course this was prob- 

 ably not a true Opalina according to our present taxon- 

 omy, but probably a Protoopalina]. 



