8 Mr. Adams'^ Defcripthm of 



O N I S C U S. 



I. b'tdentatus. O. abdomine nudo, cauda obtufiflima, fquama ultima 

 bidentata. 



Tab. II. fig. 3, 4, 



Milford Haven. 



Obf. Length \ inch ; upper llde marked with fix tranf- 

 verfe rows of ochreous fpots ; fcales feven, the lafl; 

 with two teeth, which readily diftinguiflies this 

 fpecies. 



NEREIS. 



i.viridis. N. viridis fihformis fegmentis CXXX. Linn. Syji. Nat. 

 Ed. 13. p. 1086. 

 Amongft young plants of the Fucus pinnatifdus at 



Tenbigh. 

 Obf. Length 2^ inches. 



ACTINIA.. 



I. mamlata. A. coralliflora, tentaculis numerofiflimis retractilibus 

 brevibus albis. 

 Milford Haven, furrounding the apertures of deferted 

 fhells of the Murex defpe&us. 



Obf. This beautiful fpecies is longitudinally fulcated, 

 having the edges of the bafe crenated : the lower 

 part is an obfcure red, and the upper part is tranf- 

 parent white marked with fine purple fpots ; the 

 outer circumference of the aperture has a narrow 

 ftripe of pink. When expanded, the fuperior divi- 

 6 fion 



