290 capnead^:. 



rounded by a thick lip strongly furrowed, like the mouth of a cowry-shell. 

 No trace of gonidial tubercles, or grooves. 



Colour. 



Column. A yellow emerald-green, becoming far richer and more opaque 

 at the margin. 



Disk. Transparent, with the radii brilliant emerald-green. 



Tentacles. Stems with dark umber-brown warts on a transparent 

 colourless ground : heads rich rose-pink. 



Mouth. Emerald-green. 



Size. 



Seldom exceeding half an inch in height, and three-eighths of an inch iu 

 diameter of disk. 



Locality. 



The south-west coasts of England, Scotland, and Ireland : deep water, 

 and between tide-marks. 



Varieties. 



a. Smaragdina. The condition above detailed, which was the one first 

 described, and is by far the most abundant. (PI. ix. fig. 5.) 



£. Rhodoprasina. Column and disk rosy-lilac ; margin emerald-green : 

 tentacles, stem umber, head pearl-white. (Fig. 1 .) 



y. Tephrina. Column and disk pearl-grey ; margin faint emerald : 

 tentacle-stem and head dull wood-brown. (Fig. 3.) 



S. Chrysochlorina. Column pale yellow-green below, blending above into 

 orange ; margin rich orange ; disk emerald-green ; tentacle-stem maronne 

 (or white), head pearl-white ; lip scarlet-orange. (Fig. 2.) 



e. Prasococcina. Column and disk pellucid pearl-grey, flushed with 

 scarlet ; margin emerald ; tentacle-stem and head pale scarlet. 



f. Corallina. Column brownish scarlet, margin orange-scarlet ; disk 

 scarlet; tentacle-stem and head pearl-white ; lip scai'let (or white). (Fig. 4.) 



t]. Coina. Wholly pure white, translucent ; the margin, lip, and 

 tentacle-heads opaque. 



This is one of the most exquisitely lovely little gems of 

 the aquarium ; and fortunately it is abundant on our south- 

 western shores, and very easily preserved in confinement 

 for an indefinite period. In the Channel Islands ; from 

 Torquay around the promontory of Cornwall to Ilfracombe 



