75 



the Polygastnca there is an analogous multiplication of the di^estive 

 cayity itself ; the generative system becomes the subject of this re- 

 petition m the T^ each joint being the seat of a separate ovary- 

 and th^Sponges which exhibit m their calcareous and siliceous sli- 

 «j/a the first nidiment of an intemal skeleton, repeat again and agaL, 

 without modification, m the šame individual the s^mespicuhm Thė 

 Acrita offer. as it were, the germs of the higher animaJ forms and 

 sketch forth the ideas of the typical conditifn of the prindpal'sS 

 dmsions of the animal kingdom. pnncipai suD- 



As classes of ^mYa Mr. Owen proposes to regard the Polyoastrica 



ZltS. '' ^^"^^' '°^ -^^^^ '^''- ^^ P-P-- the name of 



;niT°l*^^/."'^''!f"'' ^"^^^''h ^^ "ses the name Nematoneura, he 

 mcludes theEchnodermata and the Roti/era, together with the Vers 

 Cavttatres of Cuvier; which latter he subdivides into the Epizoa and 

 the Ccelelmmtha, a term proposed by him to comprise aU the Nema- 

 totdea, together with the genera Lingmtula and Lunculus 



He passes in rapid review the several systems of the Ccelelmintka 

 and remarks on the generative functions, that the šame vaSoi 

 which are met with in the Sterelmintha occur in this seriesLTo We 

 have the simple female apparatus without malė organs, or the crvpt- 

 androus type. m Sipunculus ; the superadded malė glandsTut 



cortrrjf v^^I^of^tr ^^^^ '^' '°"°^^^ ^^^^' "^"^'^'^^ - 



Entozoa Hominis. 



Subregnum Acrita. 



Classis (Infusoria, Cuv.). 



1. Cercaria Seminis cui locus Semen virile 



2. Trichina spiralis MuscuU voluntarii. 



Classis Sterelmintha. 



3. Echinocercus Hominis Hepar 



4. Cysticercus Cellulosa: Musculi et cerebrum 

 c T • c- ,. '''*'^^''«^^'* Viscera generatim. 



6. TamaSohum Intestina tenuia. 



7. Bothrtocephalus latus Intestina tenuia 



8. Poly Stoma Venarum Venae. 

 ia' r. pinguicola Ovaria. 



10. Distoma hepaticum Vesica fellea. 



