ORDER ACALEPHA HYDROSTATICA. 4AD1 
In 
PHYSSOPHORA, (proper) Peron, 
Between the superior vesicle and the tentacula, are found 
other vesicles, placed side by side, or one above the other, 
and of a form sometimes irregular, sometimes polyhedral, and 
forming by their union, prisms or cylinders; the tentacula, 
partly conical, partly cylindrical, partly formed of groups of 
filaments, or of globules, some in fine filiform, and susceptible 
of great elongation, form a cluster, or garland, at the inferior 
extremity. (Physsophora hydrostatica, Gm., &c. &c.) 
HIpropus, Quoy and Gaive., 
Have only lateral vesicles, almost semicircular, or in the form 
of a horse’s hoof, crowded on two ranges, and thus forming 
a sort of ear, like that of certain grains, from which also 
hangs a garland, which traverses all those pieces. The con- 
tractions of those vesicles impress upon the whole a rapid 
movement. 
CUPULITES, 
Have their vesicles attached regularly on both sides of an 
axis, often very long. 
RACEMIDES, Cuv., 
Have all their vesicles globular, small, furnished each with a 
small membrane, and united into an oval mass, which is 
moved by their combined contractions, 
RHIZOPHYZA, Peron, 
Have no lateral vesicles, but only a superior vesicle, and a 
long stem, along which the tentacula are suspended ; some 
conical, others filiform. (Physsophora filiformis, Forsk.) 
