DISTOMIDA, 57 
Fasciola lagena, Gmelin, 1. c. n. 30; Bose, 1. ¢. 273. 
Fasciola percina, Schrank, Vet. Ac. VN. Hand. 1790, 123, n. 21. 
Fasciola nodulosa, Frolich, Naturf. xxv. 76; Lamarck, An. 8S. Vert. 
iii, 184, n. 11, 2nd ed. iii. 621. 
Distoma nodulosum, Zeder, Nachtrag, 190; Naturg. 219, n. 32; 
Rudolphi, Mist. Nat. Entoz. ii. pt. 1,410; Synopsis, 113, n. 100; 
Bremser, Icon. Helminth. t. 10, f. 1-3; Deslongchamps, Enc. 
Meth, Vers, 278; Dujardin, Hist. Nat. Helminth. 484; Diesing, 
Syst. Helminth. i. 380. 
_Distoma lucioperce, Zeder, Naturg. 216, n. 23. 
Hab. Intestines of Perea lucioperca. 
Prom the collection of M. Siebold. 
Species not as yet referrible to any of the Subgenera. 
20. DISTOMA CONCAVUM. 
Distoma concavum, Creplin, Observ. de Entoz. 45, f. 7-8; Dujardin, 
Mist. Nat. Helminth. 448; Diesing, Syst. Helminth. i. 340. 
Hab. Intestines of the lesser Black-backed Gull, Larus fuscus. 
From the collection of M. Siebold. 
21. DistoMA HISPIDUM. 
Distoma hispidum, Viborg, Ind. Mus. Vet. Hafn. 243, n. 185; Ru- 
dolphi, Synopsis Entoz. 118 & 423, n. 120; Creplin, Nov. Obs. de 
Entoz.73; Dujardin, Hist. Nat. Helminth. 470; Diesing, Syst. 
Helminth. 1. 392. 
Distoma Sturionis, Rudolphi, Hist. Nat. Entoz. ii. pt. 1, 435, n. 74. 
Hab. Intestines of the Sturgeon, Acipenser Sturio. 
From the collection of M. Siebold. 
22. DIsTOMA MEGASTOMUM. 
Distoma megastomum, Rudolphi, Synopsis Entoz. 102 & 387, n. 49 ; 
Bremser, Vers, Intest. de 1 Homme, 131; Kuhn, Ann. S. Obs. 
1829, ii. 463, t. 11, f. 4,5; Dujardin, Hist. Nat. Helminth. 471; 
Diesing, Syst. Helminth. i. 357. 
Hab. Stomach of the Smooth Shark, Mustelus vulgaris. 
From the collection of M. Siebold. 
