NOTES ON EMBRYOLOGY AND CLASSIFICATION. 



445 



Classes and Orders of the APPENDICULATA. 

 Branch a. CHiETOPODA. 



I. Oligoch^ta 



II. Polychceta 



Appendix a . 

 Appendix h . 



EOTIFERA 



f"l. Naidina 



I 

 -^ 2. Soenurina 



^3. Lumbricina 



rl. Vagantia 

 I 

 ■^ 2. Sedentaria 



L3. Haliscolecina 



Myzostoma 



Archisyllidea 



fNais. 

 \Ch(Btog aster. 



[Tubifex, 

 "Xlkchi/traus. 

 fLumbricus. 

 \Acanthodrilus. 



C Nereis. 



\Polynoe. 

 jArenicola. 

 \Sabella. 

 Capitella. 



Myzostoma. 

 C Saccocirrus. 

 \Polygordh(,s. 



Branch b. ROTIFERA. 



"1. Artliroptera . Pedalion 



2. Choetoptera 



Appendix 



3. Loricata 

 ^ 4. Tubicola 

 5. Bdelligrada 



Mutica 



{Triarthra. 

 Polyarthra. 

 {Brachionus. 

 Noteus. 

 Stephanoceras. 

 Melicerta. 

 Hydatina. 

 Rotifer. 



{Balatro. 

 Asplachna. 



