INFUSORIA. 51 
Pandorina Bory (in part), Eurens. Animal without eye-point 
and tail, furnished with a vibrating flagellum, a simple urceolate 
lorica, by spontaneous internal division resembling a mulberry. 
Sp. Pandorina morum, Volvox morum Mur. Infus. Tab. ut. fig. 14—16, 
EnRENB., Jnfusionsth. Tab. 11. fig. 33. 
Gonium Murti. Animals without eye-point and tail, by spon- 
taneous division conjoined in a common quadrangular flat envelope. 
Sp. Goniwm pectorale Murty. Infus. Tab. xvi. fig. g—11; ExnRens. Tab. 
Ill. fig. 1. 
[Synura EKnrens. (Tab. III. fig. 9.) an uncertain genus]. 
Chlamidomonas EnRENB. Animal with eye-point and double 
flagellum, without tail, cluded in an urceolate envelope, either 
simple or multiple from spontaneous division within the common 
covering. 
Sp. Chimidomonas pulvisculus, Monas pulvisculus Munuu. Infus. Tab. 1. fig. 
5.6; ExRens. Jnfusionsth. Tab. 1. fig. x: represented by authors as in 
part the green matter of PrirstiEy. These animalcules were long ago 
observed by LEEUWENHOEOK ; see Sevende vervolg der Brieven, 1702. No. 
142, p. 402. 
Volvox L. (exclusive of several species) Animalcules with eye- 
point and single or double flagellum, included in the surface of 
a globular envelope which rolls on its axis: there are often smaller 
globules (gemmc) within the large one}. 
Sp. Volvox globator L., LEEUWENH. Sevende vervolg der Brieven, No. 122, 
p. 156, fig. 2; Rogsex, Jns, m1. Tab. ot. fig. 1-3 ; Muruu. Jnfus. Tab. 1. 
fig. 12-13; EnRenB. Infusionsth. Tab. Iv. fig. 1. Dusarpin, Inf. Pl. tv. 
fig. 30. Globe-animalcule ; a small green globule, as much as } line in 
size, and hence visible to the naked eye as a fine grain of sand; in 
marshy water. This form was first discovered by LEEUWENHOECK. On the 
surface of the globule minute warty points are seen ; these are the individual 
animalcules or monads of J. line. Within the globule smaller globules 
are developed,which occasionally rotate within the large one until it 
bursts and dies away?. 
1 [See F. Conn’s paper in SIEBOLD and KoELLIKER’s Zevtschrift fiir wissenschaftliche 
Zoologie, Band Iv. p. 77, &c. for reasons why the Volvocina ought perhaps, as Von 
SIEBOLD and others believe, to be classed amongst Alge. | 
(? For an account of the development and encysting of individual monads of the 
colony, of a size nearly as large as that of a young colony, see SrEIn’s Infusionsthiere, 
&c. pp. 45—46. When the full size has been attained the cyst thickens into regular 
conical processes, giving the form which Ehrenberg has described as a distinct species, 
Volvox stellatus. These large encysted volvoces are for the continuation of the species 
after the ordinary individuals of the colony have perished. | 
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