1830 ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY 1880

THE DEVELOPMENT OF THE SQUID.

LOLIGO PEALII (LESUEUR).

Fig. 6

View of the posterior surface of an embryo, in which the yolk is almost covered by the blastoderm a, arms; b, growing edge of blastoderm; m, mantle y, uncovered portion of yolk.