158 ON BRISTOL EOTIFEES. 



those wliich are without one, while sub-division B contains but 

 one family, viz. — 



(v.) Philodinsea. 

 We come now to the genera, and these would be ranked in this 

 scheme of classification as follows : — 



(i. ) FloscularicBa Floscularia, 



Stephanoceros. 



(ii.) Mdicertadaa Meliccrta, 



Limnias, 

 Lacinularia, 

 Tubicolaria, 

 (Ecistes, 

 Megalotrocha, 

 Couochilus, 

 &c 



(iii.) Brachmicea Brachionus, 



Pterodina, 

 Euchlanis, 

 Einocharis, 

 Salpina, 

 &c. 



{i\.) Rydatinaa Hydatina, 



Xotommata, 

 Synchoeta, 

 Triarthra, 

 Polyarthra. 

 Rhinops, 

 Pedalion, 

 Asplanchna, 

 &c. 



(v.) Philodincea Ptotifer, 



Actinurus, 

 Callidina, 

 &c. 

 I have purposely omitted several of the less common genera as 



