48 DR. T. s. cobbold's synopsis op the distomid^. 



Hab. Found by Natterer in Didelphis myosurus in May and June, and 

 in D, cancrivorus in December, in Brazil. 



B. In corpora avium. 



1. Hemistoma Spatula, Diesing. 



H. Spathula, Diesing, Revis. p. 15, Wedl; Cobbold, Linn. Trans, (loc. 



cit.) p. 164. 

 Holostomum Spatula, Creplin, Mehlis, Dujardin. 

 Amphistoma macrocephalum, Bremser. 

 A. m. {Falconis Milvi), Rudolphi. 

 A. Falconis palumbarii, Rudolphi. 

 Strigia Falconis palumbarii, Viborg. 

 Hab. Found by Mehlis, Wedl, and Crephn in Falco Nisus ; by the latter 



also in F. Buteo, and, as well as Mehlis, in F. ater, who also obtained 



it fi'om F. palumbarius ; by Schilling in F. lagopus; it also occurs 



in F. Milvus, F. Albicilla, F. Chrysdetos, F. Lithofalco, F. rufus, F. 



Subbuteo, F. peregrinus, F. ncevius, F. cyaneus, F. lanarius, and F. 



Gallicus. It has likevnse been procured by Dujardin from Strix 



Aluco, and by myself from S. otns. 



2. Hemistoma podomorphum, Diesing. 

 H. podomorphum, Diesing. 



Holostoma podomorphum, Nitzsch, Dujardin. 



Hub. Found by Nitzsch in the intestines of Falco Haliceetos. 



3. Hemistoma auritum, Diesing. 



H. auritum, Diesing (species inquirendse). 



Holostoma auritum, Dujardin. 



Hab. Found by Dujardin in the intestines of Strix Jlammea. 



4. Hemistoma denticulatum, Diesing. 

 H. denticulatum, Diesing. 



Holostoma denticulatum, Dujardin. 



Amphistoma denticulatum, Rudolphi. 



Hab. Found by Bremser and Dujardin in the intestines oi Alcedo ispida. 



5. Hemistoma commutatum, Diesing. 

 H. commutatum, Diesing. 



Anphistoma pileatum, Bremser, non Rudolphi. 



Hab. Found by Diesing in abundance in the intestines of Sterna Caspica 

 in June. 



6. Hemistoma trilobum, Diesing. 

 H. trilobum, Diesing, Wedl. 

 Distoma trilobum, Rudolphi, Dujardin. 



Hab. Found by Wedl and others in the intestines of Cai-bo Cormoranus. 



7. Hemistoma spathaceum, Diesing. 

 H. spathaceum, Diesing. 



Holostoma spathaceum, Dujardin, Creplin. 

 Distoma spathacevm, Rudolphi. 



