20 



along the middle of each fold or valve runs the thickened continua- 

 tion of the angles of the peduncle, in wliich there is, most probably, 

 a band of muscular fibres, though I have not been able to make this 

 point out satisfactorily. The margin of the lips is thickened and 

 slightly everted, thickly beset with filiferous and spiculiferous ve- 

 sicles : when closed, the four valvular folds of the lips form a crucial 

 slit. The ovaries or reproductive glands are placed on the four sides 

 of the middle portion of the peduncle ; each entire gland is bilobate 

 and somewhat cordiform, with the apex directed downwards (fig. 3, 4), 

 and it is enclosed as it were between the swollen corners of the pe- 

 duncle ; beyond the level of which, however, when mature, the ovary 

 projects as shown in figs. 5, 6 and 9, wliich latter represents a portion 

 of the mature ovary projecting from the surface of the peduncle. 

 These glands (the female ones at least) consist of a delicate mem- 

 brane, enclosing a granular or cellular stroma filled with ova in 

 various stages of development. The ova probably escape at a certain 

 stage of their development through ruptures of the membrane of the 

 gland, adhering for some time after their escape from the interior to 

 the surface of the ovary (fig. 1) : they afterwards appear to fall into 

 the cavity of the bell, in wliich there may frequently be observed nu- 

 merous detached ova. How long they are thus carried about by the 

 parent, or what degree of development (if any) they undergo whilst in 

 this position, I am unable to determine. In one and the same ova- 

 rian gland, ova in all stages of development may be observed, and the 

 smaller ones seem to be always attached by a short placental cord 

 (b, b, b, fig. 8). The ova are of a rosy pink or crimson colour, and 

 the fully mature ones are opaque. The colour of the peduncle ap- 

 pears to be due chiefly if not entirely to these bodies. 



When specimens of Turris neglecta are kept for some days in the 

 same water, they, like the Actinia, turn themselves inside out. At 

 first the disk only appears to be reverted over the peduncle, as in 

 figs. 3, 7 ; but as the retroversion proceeds, the lips or oval lobes are 

 also reflected over the peduncle, and the stomach itself, as in the 

 Actiniae is turned inside out and reflected over the sides of the pe- 

 duncle and ovaries. 



