MISCELLANEOUS. 257 



The specimen, Plate LIII. figs. 4, 5, had been washed ashore at St 

 Andrews, where I found it ; yet it survived a fortnight after having been 

 carried fifty miles. These creatures seldom live long, — one which I took at 

 Queensferry, in the Frith of Forth, in the. year 1819, survived eight days. 



July and August are the chief months when the Beroe pile/is, and 

 others of the Medusan race, are most abundant. 



Plate LIII. Fig. 4. Beroe pileus, quiescent. 



5. The same in ascent. 



6. The same slightly enlarged. 



7. Ciliated rib, enlarged. 



I consider it unnecessary to prosecute this subject further at present. 

 Doing so would be superfluous, so long as in ignorance whether the sub- 

 jects are in a perfect, or only in a transient state. 



IV. Valkeria spinosa, Vol. I. p. 251. — Plate LV. — The multi- 

 plicity of the parts composing this zoophyte, their extreme slenderness and 

 delicacy, together with their reciprocal intricacy, are such as to render ex- 

 trication a task almost hopeless for the representation of an entire speci- 

 men. 



The arrangement of those parts, however, which are principal and 

 subordinate, is extremely curious and interesting ; and although this is to 

 be exhibited from only a small portion, it will be sufficiently understood 

 by a branch magnified, as seen in Plate LV. 



V. Alcyonium, Vol. II. Chapter III. p. 50. — Plate XVI. — Whether 

 this subject shall prove the Alcyonium gelatinosum on further investiga- 

 tion, or a variety of the genus, it has afforded what may be the ground of 

 useful materials in natural history. 



VOL. II. 2 K 



