18 DR. T. S. COBBOLD'S SYNOPSIS OF THE DISTOMID.i!. 



8. DisTOMA RETusuM, Dujavclin. 



D. retusum, Dujarilin, Leidy, Diesing, Revis. p. 44, Van Beneden, 

 Mem. sur les Vers Intest. p. 92. 



D. clavigerum, Riulolplii (ex parte ?). 



D. RancB esculentce, Valentin. 

 In statu larva;. 



Cercaria armata, Van Beneden (ex parte). 



Hab. Discovered by Dujavdin at Rennes in Rana temporaria, and con- 

 sidered by him as distinct from D. clavigerum. It has been also re- 

 corded by Leidy in the intestines of R. halecina at Philadelphia, U.S. 



Van Beneden states (Mem. sur les Vers Intest. p. 93) that there are 

 two distinct scolex-forms in Planorbis corneus usually confounded 

 under the title of Cercaria armata, and that one of these is the larval 

 state of Distoma retusum, and the other referable to D. clavigerum. 



9. Distoma Wedlii, Cobbold. 



D. Pelopliylasis esculenti, Wedl (non descriptum), Diesing, Revis. der 

 Myzelminth. p. 51 (species inquirenda). 



Hab. Wedl found this form in the brain of Rana esculenta, but its spe- 

 cific distinctness is to a certain extent doubtful. 



10. Distoma diffusocalciferum, Gastaldi. 



D. diffusocalciferum, Gastaldi, Diesing, Revis. der Myzelminth. p. 32. 

 Hab. Discovered by Gastaldi encysted in the muscles, under the skin, in 

 the liver and in the lungs of Rana esculenta in August. 



11. Distoma acervocalciferum, Gastaldi. 



D. acervocalciferum, Gastaldi, Diesing, Revis. der Myzelminth. p. 36. 

 Hab. Found in abundance by Gastaldi enclosed in cysts connected with 

 the nervous trunks of the brachial plexus in Rana esculenta. 



12. Distoma crassicolle, Rudolphi. 



D. crassicolle, Rudolphi, Dujardin, Creplin, Pontallie, Diesing. 



D. Salamandrce, Zeder. 



Fasciola Salamandrce, Froelich. 



Hab. Found by Froelich and Bremser in Salamandra atra; in S. ma- 

 culosa by Rudolphi and Dujardin ; in Triton alpestris and Lissotriton 

 jmnctatus by Mehlis; by Pontallie in cysts among the muscles and 

 under the skin of Triton marmoratus in the month of February. 



13. Distoma Linguatula, Rudolphi. 



D. Linguatula, Rudoljjhi, Dujardin, Diesing. 



Hab. Olfers originally detected this entozoon in a Brazilian Frog. It 



has been since found by Natterer in Cystignatlius pachypus, in Docy- 



dophryna aqua, and Ceratophrys varia. 



14. Distoma cymbiforme, Rudolphi. 



D. cymbiforme, Rudolphi, Dujardin, Diesing. 



Hah. Rudolphi found nme examples in the urinary bladder of llali- 

 chelys atra, 



15. Distoma longicolle, Cobbold. 



I 



