342 THE NATURAL HISTOEY RETIEW. 



searches of Sclineider* have effectually banished from Helminthology, 

 all the above species are still admitted, though, in some cases, under 

 different names. Echinococcus liominis is the " hydatid " of a dis- 

 tinct form of Tcenia {T.ecliinococcus, Siebold). E,. Leuckart's inves- 

 tigations have conclusively shown that Trichina spiralis is not, as 

 Kuchenmeister, Weinland, and others supposed, a stage in the de- 

 velopment of Triclioceplialus dispar. Not only are all the above 

 "good" species, but they are also undoubted human Helminths, 

 save only Strongylus gigas. 



Weinland's catalogue of human Entozoa has been very carefully 

 revised by Dr. Cobbold, who has, in so doing, availed himself of the 

 results of his own observations, as well as those of other helmintho- 

 logists. Dr. Cobbold admits the following thirty-one species : — 



1. Fasciola Tiepatica, Linn. 



2. Distoma lanceolafum, Mehlis. 



3. Distoma oplithalmobium, Diesing. 



4. Distoma crassum, Busk. 



5. Distoma lieterophyes, Siebold. 



6. Bilharzia licemalohia, Cobbold. 



7. Tetrastoma renale, Delia Chiaje. 



8. Hexathyridium pinguicola, Treutler. 



9. Hexathyridium venarumy Treutler. 



10. TcBuia solium., Linn. 



11. Tcenia medioeanellatn, Kiichenmeister. 



12. Tcenia acanthotrias, Weinland. 



13. Tcenia jiavopunct a y "Weinland. 



14. Tcenia nana, Yon Siebold. 



15. Tcenia elli^tica, Batsch. 



16. Tcenia marginata, Batsch. 



17. Tcenia echinococcus, Von Siebold. 



18. Dothriocephalus latus. Bremser. 



19. Bothriocephalus cordatus, Leuckart. 



20. Ascaris lunibricoides, Linn. 



21. Asca?'is mystax, Eudolphi. 



22. Tricocephalus dispar, Eudolphi. 



23. Filaria lentis, Diesing. 



* Miiller's Archiv, 1862. p. 275. Mr. Busk has translated Schneider's paper 

 in the Quarterly Journal of Microscopical Science for the same year, and gives a 

 short abstract of its contents in his article above cited, p. 918. 



