158
PAUL BRIEN
FIG. 4. (A and B) Budding by strobilation of the postabdomen in Polyclinidae.
Th.—thorax of the ascidiozooid; Abd.—abdomen of the ascidiozooid; P. Ab—postabdomen of the ascidiozooid containing the long epicardium; C. Pec.—U-shaped
heart and pericardial cavity at the end of the postabdomen. [After A. Kowalevsky
(1874).!
A
B
PAUL BRIEN
FIG. 4. (A and B) Budding by strobilation of the postabdomen in Polyclinidae.
Th.—thorax of the ascidiozooid; Abd.—abdomen of the ascidiozooid; P. Ab—postabdomen of the ascidiozooid containing the long epicardium; C. Pec.—U-shaped
heart and pericardial cavity at the end of the postabdomen. [After A. Kowalevsky
(1874).!
A
B