of the Royal Physical Society. 335 



II. 



Description of New Protozoa. 1. Lagotia viridis. 2. Va- 

 gincola valvata. By T. Strethill Wright, M.D., Fel- 

 low of the Royal College of Physicians, Edinburgh. 



[Read 25th March 1857. See p. 258 ante.'] 



Explanation of Plates. 



Plate XVIII. 

 Fig. 1. Lagotia viridis, showing rotatory organ from lateral aspect. 



2. Front view of do. 



3. Tip of one of the lobes of rotatory organ — a large ciliary band — b striae 



bearing cilia. 



4. Young animal of L. viridis. 



5. Vagincola ampulla (Muller). 



6. Vagincola valvata, animal extended, and (7.) contracted — a valve 



raised — b do. closed. 

 8. Diagram of upper part of tube of V. valvata — a tube — b sarcode lining 

 do. — c valve closed — d sarcode coating tube on outside. 



Plate XIX. 

 Fig. 1. Ephelota coronata — a with tentacles contracted — b with do. expanded. 

 2. Diagram of tentacle of E. coronata. 



I. Lagotia viridis. 

 Family Ophrydina — Genus Lagotia.* (Mihi). 



Lagotia viridis. (Plate XVIII., figs. 1, 2.) This remark- 

 able member of the Ophrydina was discovered about two years 

 ago, occurring in great profusion on a shell dredged up from the 

 Firth of Forth. It rapidly multiplied itself until it studded 

 the sides of the vessel in which it was kept, and various Algse 

 contained therein, with its dark-green cells. In March last it 

 was again dredged from the same locality. 



In general appearance the animal resembles Vagincola, 

 though it differs from that genus in some important particu- 



* *.<x,yoff, a hare ; uriov, an ear-flap, an ear. 

 VOL. I. 2g 



