52 CLASS I. 
Family VII. Astaste. Body not loricated, caudate or ecaudate, 
form mutable. 
Astasia Enrens. Animal free, caudate, without an eye-point. 
Sp. See figures in Enrensere’s Infusionsth. Tab. vil. fig. 1.-1v. DusARDIN 
Infus. Tab. v. fig. 12. 
Euglena Enrens. (and Amblyophis ejusd.) Animal free, with 
an eye-point. 
* Body ecaudate. 
Amblyophis EHRENB. 
*“* Body caudate. 
Sp. Euglena viridis, Cercaria viridis Muruu. Infus. Tab. xrx. fig. 6-13; 
ExRRENB. Jnfusionsth. Tab. vit. fig. ix; Dusarp. Infus. Pl. v. fig. 9, 10. 
This species also belongs to PRIESTLEY’S green matter ; another species can 
occasionally by its red colour give to water a blood-red appearance. 
Family VIII. Pertphrygana (Enchelia KnRENB. in part). Body 
orbicular, surrounded with setaceous tentacles, without vibratile 
cilia. 
EHRENBERG ascribes an oral aperture to Actinophrys, which Dv- 
JARDIN could not perceive. There are no cilia, but there are appen- 
dages or cirrhi. 
Actinophrys EXMRENB., Peritricha Bory. Body rough with 
tentacles radiating in all directions. 
Sp. Actinophrys sol EHRENB., Trichoda sol Mur. Infus. Tab. xxttt. fig. 
43-45, EHRENB. Infusionsth. Tab. XxxI. fig. vi. Dusarp. Infus. Tab. m1. 
fig. 3. in fresh water. 
Subgenus Podophrya Exrens. Body with a transparent appen- 
dage resembling a pedicle. 
Sp. Podophrya cometa, Trichoda fixa MUELL. * 
Trichodiscus EHRENB. Body radiating with tentacles at the margin 
only. 
{1 The pedicle of Podophrya is very variable in length. In some of the forms it 
almost disappears, so as to render it difficult to determine whether an actinophrys or 
podophrya be under examination. STErN thinks there is no specific difference between 
the two, certainly no generic. From his observations it appears, indeed, that both 
Actinophrys and Podophrya are Acinete—forms derived from encysted Vorticella micro- 
stoma. Die Infusionsthiere, p. 138, &c.] 
