290 
CAPNEAD^. 
rounde;i 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 moi'e opaque 
at the margin. 
Disk. Transparent, with the radii bidlliant emei’ald-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 in 
diameter of disk. 
Locality. 
The south-west coasts of England, Scotland, and Ireland : deeji water, 
and between tide-marks. 
A^arieties. 
a. Smaragdina. The condition above detailed, which was the one fii'st 
described, and is by far the most abundant. (PI. ix. fig. 5.) 
lihodoprasina. 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. Chrijsochlorina. Column pale yellow -green below, blending above into 
orange ; margin rich orange ; disk emerald-gi'een ; tentacle-stem maronne 
(or white), head pearl-white ; lip scarlet-orange. (Fig. 2.) 
€. Prasococcina. Column and disk pellucid pearl -grey, flushed with 
scarlet ; margin emerald ; tentacle-stem and head pale scarlet. 
Corallina. Column brownish scarlet, margin orange-scarlet; disk 
scarlet; tentacle-stem and head pearl-white ; lip scarlet (or white). (Fig. 4.) 
7j. Coina. Wholly pure white, translucent ; the margin, lip, and 
tentacle-heads opaque. 
Thi.s is one of the most exquisitely lovely little gems of 
tlie 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 
