Figure 10

1830 ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY 1880

THE DEVELOPMENT OF THE SQUID.

LOLIGO PEALII (LESUEUR).

Fig. 10

Embryo a little older than the one shown in figures 7 and 8, represented with its dorsal surface above, and showing the anterior surface of the body, as seen from the left side.

The letters of reference have the following significance in all the figures of this plate; a, arms; a/, Posterior or siphonal pair of arms; a", second pair; a"', third pair; e, eyes; er, otocyst; es, eye stalk;/, fins; g, gills; h, branchial hearts; m, mantle; mo, mouth; re, rectum; si, inner siphon folds; si', lateral siphon folds; sm, siphonal muscle; v, velum; y, yolk; y', external yolk sac; y", yolk mass of the eye stalks and head; y"', and y"", yolk masses of the body and mantle.


	Embryo a little older than the one shown in figures 7 and 8, represented with its dorsal surface above, and showing the anterior surface of the body, as seen from the left side.
	The letters of reference have the following significance in all the figures of this plate; a, arms; a/, Posterior or siphonal pair of arms; a", second pair; a"', third pair; e, eyes; er, otocyst; es, eye stalk;/, fins; g, gills; h, branchial hearts; m, mantle; mo, mouth; re, rectum; si, inner siphon folds; si', lateral siphon folds; sm, siphonal muscle; v, velum; y, yolk; y', external yolk sac; y", yolk mass of the eye stalks and head; y"', and y"", yolk masses of the body and mantle.