42 DB. T. s. cobbolb's synopsis of the distomid^. 



M. molle, Leidy ; Diesing (species inquirendEe), Revis. p. 24. 

 Hab. Found by Leidy in the lungs of Sternotherus odoratus at Phila- 

 delphia, U.S. 



10. MoNOSTOMA iNCOMMODUM, Leidy. 



M. ? incommodum, Leidy, Diesing, Revis. p. 25. 



Hab. Found by Bailey in the throat of Alligator mississipien^is in Florida, 



U.S. 



11. MoNOSTOMA GuRLTii, Cobbold. 

 Monostoma, (sp.) Gurlt. 



M. LacertcB, Diesing, Revis. p. 25. 

 Dithyridium Lacertce, Valenciennes, Creplin. 

 D. Lacertce viridis et D. L. muralis, Rudolphi. 

 Petrathyrus obesus, Creplin. 



Piestocystis Dithrydium, Diesing, Syst. Helm. i. p. 469. 

 Hab. Found in Lacerta agilis by Gurlt ; by Bremser and Valenciennes 

 in Ld. viridis, Zacholus austriacus, and Podarcis muralis. 



D. In corpore piscium. 



1. Monostoma foliaceum, Rudolphi. 



M. foliaceum, Rudolphi, Bremser, Dujardin, Diesing (Revis. p. 20), 



Wedl, Molin. 

 Amphilina foliacea, Wagener, Archiv fiir Naturg. 1858, p. 244. 

 Hab. Found by Rudolphi and Wedl in Acipenser Sturio ; by Molin in 



A. Nasus; by Diesing in A. stellatus and A. glaber. 



2. Monostoma capitellatum, Rudolphi. 



M. capitellatum, Rudolphi, Dujardin, Diesing (Revis. p. 23), Wagener. 

 Hab. Found by Rudolphi and Wagener in Box Salpa ; it also occurs in 

 Scomber Scombrus. 



3. Monostoma orbiculare, Rudolphi. 

 M. orbiculare, Rudolphi, Dujardin, Diesing. 



Hab. Found by Rudolphi in the intestines of Box Salpa. 



4. Monostoma liguloideum, Diesing. — 

 M. liguloideum, Diesing. 



Hab. Found by Natterer in the abdominal cavity of Vastres Cuvieri. 



5. Monostoma constrictum, Diesing. 



M. constrictum, Diesing. 



Hab. Found by Diesing in the anterior chamber of the eye of Abrainis 

 Brama. 



6. Monostoma pr^morsum, Nordmann. 

 M. prcBmorsum, Nordmann, Dujardin, Diesing. 



Hab. Found by Nordmann in the branchial cavity of Abramis Brama. 



7. Monostoma Filum. 



M. Filum, Dujardin, Diesing (Revis. p. 24), Wagener. 



Hab. P'ound by Dujardin in the intestines of Exocetus exsiliens ; in the 



