362 DESCRIPTION OF [Rotatoria. 



595. NoTOMMATA syriiix. — Body large, bell-shaped; 

 lateral foot scarcely visible, teeth curved and bifid at the 

 points. This species is very similar to the former, and 

 only distinguished from it by its small foot and the spaces 

 within the cilii cluster (mouth) being convex, not concave. 

 Found in a turf pool. Length l-40th. 



596. NoTOMxMATA hyptopus. The belly-footed No- 

 tommata. — Body bell-shaped, nearly globular, rather large; 

 foot slightly prominent at the middle of the belly, teeth 

 small ; vibratile organ composed of four or five muscular 

 bundles ; oesophagus very short. Length l-72nd. 



597. NoTOMMATA j9«r«s«7a. The parasitic Notommata. 

 — Body small, oval ; foot short, and teeth small ; three or 

 four bundles compose the rotatory apparatus ; oesophagal 

 head globose, tube short ; alimentary canal stout, simple, 

 usually filled with green matter. This curious animalcule 

 lives in the globular clusters of Volvox globator, where it 

 deposits its eggs, which are therein hatched. When of 

 proper age, the creatures eat their way out through the 

 hollow sphere. Length l-40th. 



598. Notommata ^raww/rtm. The cuckoo Notommata. 

 — Body short, cylindrical, truncated at both ends; foot 

 slender. The body has always a few dark granular bodies 

 within it. Dr. E. discovered it in 1831. In 1835 he 

 observed eggs of two sizes on the dorsal surface of N. 

 brachionus ; the smaller ones were distinguished by dark 

 granules within them, and produced N. granulans. From 

 other observations he concludes these eggs of N. granu- 

 lans are deposited by the parent upon N. brachionus, like 

 the cuckoo, who lays her eggs in the nests of other birds. 

 Length 1 -280th. 



