50 CLASS I. 
*eee* Cells simple, clustered round an axis, each making half a spire 
(Agathistegia). 
Genera: Uniloculina, Biloculina D’Orxs. (Sp. Bilocul. Bulloides 
D’Orp. 1. 1. Tab. xvi. fig. 1—3), Fabularia Derrance (Sp. Yabul. 
discolithes D’Orp. 1. 1. Tab. xvi. Fig. 14-17), Spiroloculina, Trilo- 
culina D’Ors. (Sp. Triloc. trigonula D'Or. 1. 1. Tab. xvi. fig. 5-9), 
Cruciloculina, Artiloculina, Spheroidina, Quingueloculina D’Ors. 
(Sp. Quinqueloc. saworum D’ Ors. 1. 1. Tab. xvi. fig. 10-14), Adelosina 
D’Ors. 
The last division coincides for the most part with the genus 
Miliola Lam. Dvsarvrn has described and figured a living species 
of this genus with its capillary processes or extensions under the 
name of Miliola vulgaris; Infus. Pl, 1. fig. 14. 
Orper III. <Atricha. 
Animalcules without a distinct mouth, furnished with one or 
more flagelliform filaments for motion, form persistent or mutable. 
Family IV. Monadina. Body not loricated, gelatinous, pellucid. 
Monas Mur. (exclusive of several species). Body oblong or 
round, with a single flagelliform filament. 
See figures in Enrens. Jnfus. Tab.1. To this genus belong animalcules 
of — line, in which the highest magnifying power shews no organisation, 
and which even at the present day, with the assistance of the best 
microscopes, cannot be otherwise characterised than as punctiform bodies— 
the character given by MUELLER to his genus Monas. 
Uvella Bory, Enrens. [Monadines associated in clusters in 
form of a mulberry or of grapes revolving in all directions. | 
Cercomonas DusARD., Bodo EHRENB. (in part). Body caudate. 
Family V. Cryptomonadina. Body loricated, with a mem- 
branous flexible test. 
Cryptomonas EHRENB. (Cryptoglena ejusd., with an eye- 
point). 
Family VI. Volvocina. Several animalcules contained in a com- 
mon envelope, or furnished each with its own envelope, which is 
confluent into one mass. 
