DE. T. S. COBBOLD's SYNOPSIS OF THE DISTOMIDiE. 15 



41. DiSTOMA Arknula, Creplin. 



D. Arenula, Creplin, Uujardin, Diesing. 



Hab. Infests abundantly the intestinal canal of Fulica atra. According 

 to Creplin, it is invisible to the naked eye. 



42. DiSTOMA FiLUM, Dujardin. 

 X). Filum, Dujardin, Diesing. 



Hab. Eight examples were discovered by Dujardin in the intestines of 

 Fringilla domestica. 



43. DiSTOMA ARCUATUM, Dujardin. 

 D. arcuattim, Dujardin, Diesing. 



Hab. Discovered by Dujardin in Corvus glandarius, who found it present 

 in six instances out of nineteen dissections. 



44. DiSTOMA CoLLURiONis, Zeder. 



D. Collurionis, Zeder, Rvidolphi, Diesing. 



Hab. This doubtful form is stated by Schrank to infest the intestines of 



Lanius CoUurio. 



45. DiSTOMA CLATHRATUM, Dcslougchamps. 

 D. clathratum, Deslongchamps, Dujardin, Diesing. 



Hab. Found by Deslongchamps in the gall-bladder of Cypselus Apus in 

 the month of May. 



46. DiSTOMA COMMUTATUM, Dicsing. 



D. commutatum, Diesing, Revis. der Myzelminth. p. 35. 

 D. dimorphum, Wagener. 



Hab. Discovered by Wagener in the intestinal caeca of Phasianus Gallus 

 in March. 



47. DiSTOMA XANTHOSOMUM, Wagener. 



X). xanthosomum, Creplin? Wagener, Diesing, Revis. der Myzelminth. 



p. 51 (non descriptum). 

 Hab. Removed by Wagener from the gall-bladder of Podiceps minor. 



48. DiSTOMA cRASSiuscuLUM, Rudolphi. 



D. crassiusculum, Rudolphi, Dujardin, Creplin, Wedl, Diesing, Revis. 

 p. 49. 



D.felleum Falconi Chrysaete, Viborg. 



D. bills, Zeder. 



Faseiola bills, Gmelin. 



Planaria bills, Braun. 



Hab. Found by Abildgaard and Braun in Falco chrysaetos ; by Creplin 

 in F. alblcilla ; by Wedl in F. Buteo. The extremely minute papillae 

 or teeth described by Wedl all round the oral orifice are not homo- 

 logous with the papillary eminences attached to the oral sucker in the 

 genus Crossodera. 



C. In corpore reptilium. 



1. DiSTOMA CYGNOIDES, Zcdcr. 



D. cygnoides, Zeder, Rudolphi, Siebold, Miescher, Valentin, Dujardin, 



