DIGENETIC TREMATODES 21 



Family CLINOSTOMATIDAE 



Clinostomum marginatum (Rudolphi, 1809) 



Synonyms : See note in Taxonomy below. 



Hosts : Birds of the Heron group 



Larvae in Mylocheilus 



caurinus 

 Larvae in Richardsonius 



balteatus 



Pac. 



N.W. 

 B.C. 



Guberlet, 1927 



Bangham & Adams, 1954 



B.C. Bangham & Adams, 1954 



Additional host references in Yamaguti (1958), Harmes (1959), and 

 Schwartz (1956). 



Taxonomy: This species has not been definitely placed taxonomically. European 

 workers (Dawes, 1946; Skrjabin, 1947d; Jaiswal, 1957) placed this in 

 synonymy with C. complanattim (Rudolphi, 1819). Yamaguti (1958) showed 

 the status of the species to be imclear. American workers accepted C. 

 marginatum as the valid name as evidenced by continued reports of the 

 species (Kruidenier, 1951; Hollis and Coker, 1949; Cameron, 1945; Bang- 

 ham and Adams, 1954). 



Biology: Furcocercous cercariae with fin folds develop in Helisoma antrosum 

 and H. campanulatum; metacercariae encyst in many fish and develop to 

 maturity in herons (Hunter and Hunter, 1934, 1935, 1935b; Cameron, 

 1945). Cameron (1945) also stated that man has been a host elsewhere. 



Family CYCLOCOELIDAE 



Cyclocoelum obscurum (Leidy, 1887) Harrah, 1922 



SjTionym : Monostomum obscurum Leidy, 1887 



Hosts : Reported from an unknown host from Spokane, Washington, by Harrah, 

 1922. Additional hosts (Harrah, 1922; Tubangui, 1933). 



Family DICROCOELIIDAE 

 Athesmia jolliei Schell, 1957 



Host: Falco sparverius Idaho Schell, 1957 



No other record is known. No life history is known for this genus. 



Brachycoelium salamandrae (Frolich, 1789) Stiles and Hassell, 1898 



Synonyms: Fasciola salamandrae FroVich, 1789 

 Distoma salamandrae Zeder, 1803 

 Distoma crassicolle Rudolphi, 1809 

 Distomum flavocinctum Linstow, 1879 

 Brachycoelium crassicolle (Frolich, 1789) Looss, 1899 

 Lecithodendrium crassicolle (Frolich, 1789) Stossich, 1799 

 Brachycoelium hospitale Stafford, 1903 



