NOTES ON PARASlriiS ' 97 



Bocly without retractile caudal appendage . 8 



8. Intestinal caeca, testicles and ovary prolusely branched ; 



cirrus présent; known only in Mammals. — Type : Fas- 



ciola hepatica Linnaeus Fasciola. 



Intestinal caeca tubular, more or less simple ; testicles and 

 ovary generally globular, rounded or somewhat lobate ; tes- 

 ticles occasionally branched ; cirrus présent or absent . 9. 



9. More than two testicles (generally numerous). — Type : Disto- 



mum polyorchis Stossich Pleorchis . 



Two testicles, rarely one, présent 10. 



10. Intestinal caeca short, not (or rarely) extending beyond 



acetabulum ; oesophagus generally long ; cirrus présent ; 

 testicles two, on nearly same transverse plane, generally 

 anterior of utérine coils, but some distance apart ; vitel- 

 logene glands but slightly developed ; utérine coils 

 extend into posterior portion of body. — Type : Distoma 



crassicolle Dujardin Brachycœlium. 



Intestinal caeca ratlier long, extending beyond acetabulum; 

 oesophagus long or short Il 



11. Testicles anterior of transverse vitelloduct and mass of 



utérine coils, the latter extending into the posterior 

 portion of the body; cirrus présent; oesophagus short." — 

 Type : Dicrocœliumlanceatum Stilesand Hassall. Dicrocœlium. 

 One or two testicles présent, posterior of transverse vitello- 

 duct, and posterior of or amid utérine coils .... 12. 



12. Acetabulum long, pedunculale, giving a bifurcate appearance 



to anterior end of worm ; known only in lîsh. — Type : 

 Distoma angulatumBuiardm Podocotyle. 



Acetabulum globose, semi-pedunculate ; cirrus pouch prés- 

 ent; oesophagus long or short. — Type : Fasciola hramac . 



Sphcerostoma. 



Acetabulum sessile, imbedded 13. 



13. Cirrus pouch absent; testicles two, one generally slightly 



posterior to the other and both posterior to utérus, may be 

 lobate or slightly branched ; vitellogene glands do not 

 usually extend distal of testicles ; body much longer than 

 broad ; oesophagus short. — Type : Campula oblonga 

 Cobbold Campula. 



Archives da Parasilolofjic, I, n" 1, 1898. 7 



