JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATES IV, V, & VI, 
Illustrating Dr. T. Strethill Wright’s paper on British 
Zoophytes. 
PLATE IV. 
~ Aiquorea vitrina. 
ig. 
1.—Planula, directly after leaving the ovary. 
2.—Same, a week old. 
3.—Same, after having fixed itself to the tank and developed its sclero- 
derm. (Planula now become a polypary.) 
4,—Polypary putting forth a polyp-bud. 
5.—Same, with young polyp. 
6.—Empty polyp-cell. 
Atractylis arenosa. 
7.—Polyp-stalk, with two opposite ovaries, the scleroderm covered by 
transparent colletoderm. 
8.—Ovary, with colletoderm and scleroderm removed, showing layer of ova 
packed between endoderm and ectoderm. 
9.—Advanced stage of ovary: a, ruptured scleroderm; 4, ectoderm; ec, 
endoderm ; d, secreted cap ot “ colline.” 
10.—Ovary ruptured, ova extruded into the cap of colline or zest. (The 
letters correspoud to those of fig. 9.) 
PLATE V. 
Vorticlava Proteus. 
1.—V. Proteus contracted. 
2, 3, 4, 5.—Same, in different states of extension and form. 
6.—Diagram of the tissues of the polyp of VY. Proteus: a, colletoderm at- 
tached to subtentacular ridge, 4; ¢, ectoderm; d, endoderm. 
Acharadria larynz, 
7.—Polypary, with two polyps. 
8.—Immature polyp. 
Laomedea decipiens. 
9.—Empty cell, showing the double appearance of its border. 
PLATE VI. 
Trichydra pudica. 
1.—Polyp extended, showing the lax habit of the body and tentacles. 
2.—Polyp withdrawing itself when disturbed. 
3.—Young polyp, with only four tentacles. 
4.—Polyp within its tube. 
5.—Empty tube. 
6.—Supposed Medusoid of Trichydra pudica. 
