GREEN ANTHEA. 15 



in every direction. Sometimes one would suddenly 

 suspend the motion of its cilia, as if tired ; then after 

 having rested a few moments, put forth one cilium in a 

 cautious manner, then another, and in a moment the 

 whole were again in vibration, and the little embryos 

 was gyrating in its giddy dance. 



The embryos remained active in the piece of the 

 ribbon under the microscope, for several days, but 

 did not appear to increase in development, nor were 

 any hatched. They then became motionless, and 

 were doubtless dead. 



ANTHEA CEREUS. 



Feb. 2S)rl. Under a stone at low water mark I 

 found a fine specimen of Anthea cereus, attached to 

 the under surface. I kept it some days in the viva- 

 rium, where its appearance was very beautiful. The 

 body is about \\ inch thick, and the same in height, 

 of a purplish-brown hue marked with numerous lon- 

 gitudinal narrow bands of dull lilac, each band mar- 

 gined with darker colour. The tentacles when fully 

 expanded are 1^ inch long, and about a line in thick- 

 ness at the base, tapering gradually ; of a brilliant 

 satiny light-green, with the tips purplish-red. The 

 tentacles were contractile but not retractile, and were 

 never regularly radiating, but mingled irregularly in 

 a tortuous manner in all directions. They were adhe- 

 sive to any foreign substance on all parts of their 

 surface The body was frequently distended by the 

 imbibition of water; when it became more pellucid. 



In the same pan I had three individuals of Eolis 



