SUBDIVISIONS OF ACTINOID POLYPS. 67 
quite solid. ‘Transverse septa between the lamellz are some- 
times wanting. ‘The calicles are usually striated externally 
but seldom derttate. The polyps, moreover, are small; and 
very commonly they stand prominent above the corallum when 
expanded. ‘The Orbicella, figured on page 55, is an example 
of one of the massive Astrea-like forms, constituting the Or- 
bicella family, or Orbicellide, in the Oculina tribe. 
The Caryophyllia here figured is one of the solitary species 

CARYOPHYLLIA SMITHII, STOKES. 
of the tribe found in European Seas, and on the coast of 
Great Britain. The figure is from Gosse’s British Actinology. 
It also grows much longer in proportion to the breadth. The 
figure to the right is of one unexpanded. One of its lasso- 
cells, in different states, is shown in figures 3, 4, 5, on page 31. 
The corallum of a related species, Caryophyllia cyathus, 
is given on page 42. The walls and septa are remarkably 
solid. The Caryophyllia flavus has been found not only in 
the Mediterranean, but also as far north as the British Isles, 
and in the Florida Straits. 
Another example of this tribe, as defined by Prof. Verrill, 
is the species of Astrangia occurring alive along the southern 
shores of New England, and on the coast of New Jersey. 
Specimens are not uncommon in the vicinity of New Haven, 
on the rocks by the Light-House, and at other places in Long 
Island Sound, and when alive it is an exceedingly beautiful 
