92, CATALOGUE. OF ENTOZOA. 
III. SCHISTOCEPHALUS. © 
Teenia (sp.), Muller, Schrank, Bloch, de: 
Bothriocephalus (sp.), Ludolphi, Mehlis, Bremser, Leuckart, ec. 
Rhytis (sp.), Zeder. 
Halysis (sp.), Zeder. 
Schistocephalus, Creplin, Nov. Obs. 90; Allgem. Encyc. 296; Meh- 
- las, Isis, 1831, 192; Dujardin, Hist. Nat. Helm. 622; Diesing. 
1. ScHISTOCEPHALUS DIMORPHUS. 
Schistocephalus dimorphus, Creplin, Nov. Obs. 90; Allgem. Encyk. 
xxxii. 296; Mehlis, Isis, 1831, 193; Dujardin, Hist. Nat. Helm. 
623; Diesing, Syst. Helminth. i. 584. 
1. In the first degree of development; in the intestine of the 
Gasterosteus. 
Frisch, Miscell. Berol. iv. 1727, 395. 
Hirudo depressa alba, Linweus, Oelandsk. och Gothlandsk. Resc:, 25. 
Fasciola hepatica (part), Linneus, Syst. Vat. ed. xii. 1077. 
Teenia lata, Pallas, Hlench. Zooph. 410. 
Teenia acutissima (part), Pallas, Nord. Beyt. i. 1, 76-78, t. 3, f. 27. 
Teenia solida, Muller, Zool, Den. Prod. 2657; Zoega, Naturf. xviii. 
25 (note) ; Gmel. Syst. Nat. 3079, n. 80; Schrank, Verzeich. 49, 
n. 147. 
Teenia gasterostei, Muller, Naturf. xviii, 22-35, t. 3, f. 1-5 ; Fabri- 
cius, Faun. Groenl, 320, n. 300; Batsch, Bandw. 224, f. 170; 
Abildgaard, Dansk. Selsk. Skrivt.i. 1, 53-58; Vers, 49-53, t. 5, 
f.1,ns1&2; Schrank, Verzeich. 49, n. 148; Bosc, Hist. Nat. 
Vers, i. 308. 
Rhytis solida, Zeder, Natwrg. 297, n. 10. 
Bothriocephalus solidus, Rudolphi, Hist. Nat. Entoz. ii. 2, 57 ; Syn- 
opsis, 1389-477, n. 14; Mehlis, Isis, 1831, 192; Bremser, Icon. 
Helm. t. 13, f.9-11; Leuckart, Zool. Bruchs. t. 2, f.27; Blain- 
ville, Dict. Sc. Nat. lvii. 610; Zeder, Nachtrag, 257. 
2. Second degree of development 3 tn the intestines of Birds. 
Teenia lanceolato-nodosa, Bloch, Abhandl. 10, n. 2, t. 1, f. 9. 
Teenia lanceola B, Batsch, Bandw. 167. - 
Teenia lanceolata 8 nodosa, Gmelin, Syst. Nat. 3075, n. 63 ; Rudol- 
phi, Obs. i. 41. 
Tenia nodularis, Schrank, Verzeich. 39, n. 118. 
Halysis lanceolato-nodosa, Zeder, Naturg. 340, n. 18. 
Bothriocephalus nodosus, Rudolphi, Hist. Nat. Entoz. ii. 2, 54; Syn- 
opsis, 140,n.15.— - 
Hab. Intestines of che Black-headed Gull, Larus ridibundus. 
From the collection of M. Siebold. 
