286 
CAPNEAD^. 
Mouth. Slit-like, coarsely furrowed. Stomach-wall capable of protru- 
sion, so as to conceal the whole disk. 
Colour. 
Column. A rich apricot-yellow, which here resides in the epidermis, for 
when this is rubbed off, the colour is white, but when renewed the colour 
returns. 
Dish. Pellucid white, with fine opaque white radii. 
Tentacles. Pellucid white, faintly tinged with red, and tipped with 
opaque white. 
Mouth. Lips deep buffi 
Size. 
Diameter and height of column about an inch ; expanse the same. 
Locality. 
The south of England and south-west of Ireland : deep water. 
This fine species, oulj inferior in beauty to the one just 
described, was dredged by Mr. W. Thompson in Wey- 
mouth Bay, — eight fathoms, gravel, — in September, 1853. 
As I was at Weymouth at the time, he kindly showed it 
to me, and I thus had the opportunity of making careful 
drawings and notes from the life. We considered it as more 
nearly allied to Corynactis than to any other recognised 
form ; and, the species augusta being then unknown, I was 
induced to suggest the specific name heterocera^ which Mr. 
Thompson adopted, from €T€po<;, diverse, and Kepa^, a horn. 
In confinement, the species appeared hardy. When 
detached it readily adhered again ; soon expanded after 
having been provoked to close ; often passing from one 
condition to the other many times in quick succession. 
It is subject to very little change of shape, in this respect 
contrasting with Corynactis, which is most protean. Mr. 
Tliompson observed that it opened slowly, exserting the 
tentacles of one-fourth of the periphery, while the rest 
remained closed. These organs were nearly motionless. 
