26 STYLOPHORIDiE. 



Lophohelia exigua Pourt. 

 Plate I., figs. 6 and 7. 



Coralkmi branching; the corallites alternate, forming angles of 

 70°— 75° with their predecessors, proportionally shorter and more 

 open than in L. iwoUfcra. Wall smooth or very finely granulated. 

 Costce sharp and prominent, but not extending far downward. Cal- 

 icle circular, well opened, very deep. Septa thin, slightly exsert, in 

 six systems and four cycles, the last almost rudimentary. 



Height, 3 to 4 cm. ; height of single corallites, 4 to 5 mm. ; diam- 

 eter of calicle, 4 to 6 mm. 



Off Tortiigas, in 36 and 79 fathoms. 



Off Pacific Reef, in "287 fathoms (dead fragments). 



The fragment from the last locality is doubtful, being much worn. 



Lophohelia Carolina Pourt. 



Corallum branching, with smooth and very fiiintly striated caenen- 

 chyma, dense and heavy. Calicles regularly alternate, cost^ dis- 

 tinct on the border of the calicles only. Calicles prominent, not 

 very deep ; septa with entire border, not exsert. Six complete 

 systems, three unequal cycles, the first nearly meeting in the centre ; 

 no columella. The branch from which this description is taken is 18 

 cm. long, 8 mm. in diameter in the thickest part, calicles 4 mm. 



This species is named according to the desire of Mr. R. Arango 

 of Havana, who sent it to the Museum. The depth from which 

 it was obtained is not stated, but it came probably from a fisher- 

 man's line or net, as many other interesting specimens in that gen- 

 tleman's collection. 



Family STYLOPHORID^E Pourt. 



Stylopliorince M.-Edw. & H., 1857. 



PseudoculincB M.-P:d\v & IT. Ann. Sc. Nat, 3d Ser., A^ol. XIII., 1850. 



This group was jDlaced by Milne-Edwards and Haime at the end 

 of the Oculinidae, as a subfamily intermediate between the Ocu- 

 linida3 and the Astraeidge, more nearly allied to the former than to 



