10 DB T. S. COBBOLD's STKOPSIS OF THE DISTOMID^. 



3. DiSTOMA MARGINATUM, Molin. 



D. marginatum, Molin, Diesing, Revis. der Myzelminth. p. 29. 

 Hab. Found by Molin in the intestines of Anas crecca in the month 

 of November. 



4. DiSTOMA HiANS, Rudolphi. 



D. Mans, Rudolphi, Nathusius, Gurlt, Dujardin, Wagener, Diesing, 



Revis. p. 29. 

 Hab. Found in the oesophagus of Ciconia nigra by Rudolphi, and also 



by Nathusius, Dujardin, and Diesing ; in C. alba, by Gurlt. 



5. DiSTOMA COMPLANATUM, Rudolphi. 



D. complanatum, Rudolphi, Dujardin, Diesing. 



Hab. Found by Rosenthal in the oesophagus of Ardea cinerea in the 

 month of April. 



6. DiSTOMA Leidyi, Cobbold. 



Distomum dubium, Diesing, Revis. der Myzelminth. p. 32. 

 Clinostomum dubium, Leidy. 



Hab. Discovered by Leidy in the intestines of Scoloj)ax minor, at Phi- 

 ladelphia, U.S. 



7. DiSTOMA PONTALLIEI, Cobbold. 



D. du Blongios, Pontallie. 



D. cladocalium, Diesing, Revis. p. 50 (spec, inquirend.). 

 Hab. Found by Pontallie in the gall-bladder and biliary ducts of 

 Ardea minuta. 



8. DiSTOMA cucuMERiNUM, Rudolphi. 

 D. cucumerinum, Rudolphi, Diesing. 



Hab. Stated by Rudolphi, on the authority of Rousseau, to infest the 

 trachea of several sea-birds. 



9. DiSTOMA DELICATULUM, Rudolphi. 



D. delicatulum, Rudolphi, Dujardin, Diesing. 



Hab. Found by Braun very abundant in the gall-bladder of Anas 

 sponsa. 



10. DiSTOMA HETEROSTOMUM, Rudolplli. 



D. heterostomum, Rudolphi, Dujardin, Diesing, i. p. 353. 

 Hab. Found in the oesophagus of Ardea purpurea by Jiu-ine, and in the 

 mouth of the same bird by Rosa. 



11. DiSTOMA DIMORPHUM, Diesing. 



D. dimorphum, Diesing, Syst. i. p. 353, et in Neunzehn Arten von Trem. 

 p. 65, et in Rev. der Myzelminth. p. 34. 



D. marginatum, Rudolphi, Dujardin. 



Hab. This remarkable species was first discovered by Olfers in Brazil, 

 adhering to the sides of the tongue oi Ardea Cocoi. There are, how- 

 ever, two well-marked forms, the D. marginaftim being the same trema- 



