352 DESCRIPTION OF [Rotatoria. 



The genera are related as follow : 



r teeth absent ........................................ Enteroplea. 



C jaw many-toothed ...................... Hydatina. 



teeth present 1 



L jaw single- toothed . ..................... Pleurotrocha. 





"frontal Furcularia. 



/- foot styliform Monocerca. 



r frontal cilii, no uncini or styles Notommata. 

 one { I 



cervical ( , ( frontal cilii and styles Synchaeta. 



\ furcated I 



L frontal cilii and uncini Scaridium. 



[_ no foot, but a many partile beard, or fins Polyarthra. 



f foot furcated Diglena. 



frontal < C beard . . . Triarthra. 



foot 



f 



[styliform ^ no beard Rattulus. 



Eyes , 

 present 



cervical; foot furcated Distemma. 



fnon- f cervical Triophthalmus. 

 edicelled^ twQ frontal> one cervica i $ ; Eosphora. 

 two pedicelled frontal eyes, one non-pedicelled cervical 1 

 eye j Otoglena. 



with many simply conglomerate eyes, more than three Cycloglena. 



^ith many doubly-conglomerate eyes, more than three Theorus. 



Genus CXLIX. ENTEROPLEA. These rotatory animal- 

 cules have neither eyes nor teeth, but possess a fork-like 

 foot; the cilii of the vibratile organ are disposed in bundles, 

 based in semi-globular muscles. Several longitudinal 

 muscles move the body, others the foot-like pincers. The 

 nutritive organs are a long oesophagus, with a bulb or head, 

 surrounded by aradiant (vascular?) wreath. The alimentary 

 canal is conical; it has, anteriorly, two ear-like pancreatic 

 glands, is suddenly diminished posteriorly, and terminates 

 where the muscles of the foot commence. The propagative 

 structures are an extended ovarium, two thin wedge-shaped 



