DIGENETIC TREMATODES 23 



Lutztrema monenteron (Price and Mcintosh, 1935) Travassos, 1941 



Sj'nonyms : Lypersoiniim monenteron Price & Mcintosh, 1935 



Brachylecithum monenteron (Price & Mcintosh, 1935) Strom, 1940 



Hosts : Turdus migratorius Idaho Schell, 1957 



Ixoreus nacvis naevis Idaho Schell, 1957 



Pipilo erythophthalmus Wash. Schell, 1957 

 oregonus 



Additional North American hosts in Yamaguti (1958). Also reported from 

 Europe by Mettrick (1956). 



Morphology: Skrjabin and Evranova (1952) redescribed and figured this form. 

 Denton and Byrd (1951) gave the flame cell formula and description. 

 No life history is known for this genus. For life history studies on other 

 species in this genus see Denton and Byrd (1951). 



Paradistomum passerculum Schell, 1957 



Host : Passcrculus sandzcichctisis Idaho Schell, 1957 



alaiidinis 



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



Platynosomum fastosum Kossack, 1910 



Synonym: Dicrococliiim lanceolatum var. symmetriciim Bayless, 1918 (Yama- 

 guti, 1958) 



Host: Neotoma fiiscipes Ore. *Benton County 



Additional hosts in Yamaguti (1958) and Perez Vigueras (1955). 



Morphology: Redescribed and figured in Skrjabin and Evranova (1952). 



Biology : In Puerto Rico the daughter sporocysts develop in the snail Subulina 

 octona and leave the snail as sporocysts, then penetrate a lizard which is 

 eaten by a cat (Maldonada, 1945). 



Family DIPLOSTOMIDAE 



Alaria arisaemoides Augustine and Uribe, 1927 



Hosts: Canis familiaris Ore. Dikmans, 1945; Price, 1932b 



Felts domesticus Ore. Dikmans, 1945 



Other hosts from North America in Yamaguti (1958). 



Morphology' : Redescribed and figured by Dubois (1938). 



Biology : Cercariae develop in Planorbula armigera and Proinenetus exactions 

 and penetrate tadpoles and adults of Rana pipiens, Rana sylvatica, and 

 Bufo americanus. Diplostomula develop in the lungs of foxes and migrate 

 to the gut to mature — experimentally by Pearson (1956). 



* Asterisks denote new (previously unpublished) reports of the parasite in the area. 



