Volvorina.] ISTV^OUZXt ANIMALCULES. 165 



commimicated (Trans. Microscopic Soc vol. iii., 1851), an interesting 

 observation, confii-ming Ehrcnberg's account. 



"Within the cavity of a large specimen of this species, evidencing 

 its nsual vitality, and the ciliary movements on its surface, he 

 noticed a very active Rotifer, ■which he believes to have been the 

 Notommata parasitica, and which was subsequently accompanied by 

 another of the same species, but smaller. He adds, " by the most 

 careful examination, no opening could be perceived by which they 

 could have been introduced, neither did there appear to have been 

 any viscera by which their motions might be impeded, as they swam 

 about as freely as fish in a glass-globe, to which, indeed, they bore 

 no faint resemblance." 



YoLvox aureus. — Is of a green colour, and nearly globular. The 

 large clusters are in the form of a sphere, and the smaller ones 

 ■nithin them of a golden colour, and smooth surface. Found in rain 

 water standing on turf. Diameter of globe l-36th. 



V. stellatus. — Is small, of an angular foitn, and green colour. 

 The clusters are subglobose, sometimes oblong, and contain other 

 globes within them, of a green colour, and having their surfaces 

 tuberculated or stellated. Diameter of globe l-30th. 



Ehrenberg communicated a paper by Werneck, on the Infusoria, 

 to the Eoyal Academy of Berlin, and an abstract appeared in the 

 monthly report of that society, in which very brief characters of 

 several new genera, both of Polygastrica, and of Rotatoria are given — 

 two of which ai'e to be inserted in this family Vohocina, as allied to 

 the Pandorina. — The first genus is called 



Calia. — Monads imbedded in a gelatinous mass, affixed to plants, 

 and not swimming freely ^about. Two species are known, the (cha- 

 racters not given.) 



The second genus bears the name of Stephanoma. — Panim'ina with 

 a single circular series of animalcules, indi\T.dual corpuscles dividing 

 after the manner of Gonium. One species obsei-ved — a genus of a 

 peculiar form exhibiting a circlet of spherules, connected as a wreath. 

 (Monatsbericht der Konigl Preuss. Akademie der "Wissens. Chaften 

 Zu Berlin. November 1841, p. 377.) 



