MADREPORARIA OF THE DEEP SEA. 317 
The septa are stout, unequal, and crowded ;.none are exsert; but they are rather 
wavy. ‘The primary are not readily distinguishable from the secondary septa; but these 
are longer than the tertiary. There are six systems of septa, and three cycles in each. 
The columella is formed by one twisted process. 
The pali are small, and are placed before the secondary septa. 
Height of corallum 38; inch; breadth of calice 3% inch. 
Dredged up No. 17 a dredging, 2nd expedition of the ‘ Porcupine.’ 
 CAaRYOPHYLLIA POURTALESI, Duncan. (Plate XLII. figs. 3-10.) 
The corallum is subturbinate, curved, and swollen. 
The calicular margin is circular; and the base, which is truncated, is marked by the 
results of displacement from the foreign body to which it was attached by a very small 
peduncle. 
The coste are flat, broad, equal, and terminate at the calice in angular points, which 
are much broader than the septa. 
The epitheca is shining, and gives the chevron and granulated ornamentation to the 
coste. 
The calicular fossa is shallow. The columella is very small, and is formed by one or 
two twisted processes. ‘The pali are irregular and tall. 
The septa are unequal, not exsert, are wavy, very granular laterally, and delicate ; 
they are wide apart, and are in six systems. There are three cycles of septa in each 
system, and some members of the fourth in some systems. 
Height of corallum 58; inch; breadth of calice ¥ inch. 
There are some young specimens, which prove that the septal number is reached very 
early, and that the epitheca covers the coste and intercostal spaces at first, and does not x 
permit them to be seen (figs. 4-7). 
Dredged up in the second expedition of the ‘ Porcupine,’ in stations 24 and 29. 
American Caryophyllie. 
M. de Pourtales describes Caryophyllia cornuformis, Pourt., which he obtained in 
237 and 248 fathoms, off Sand Bay and the Samboes, Florida, on a bottom consisting of 
Foraminifera. It has four cycles; but the pali are before the secondary septa. This 
anomaly separates the species from all others. Otherwise it belongs to the Arcuata 
type. 
Caryophyllia formosa, Pourt., was found by the same excellent naturalist off Havana, 
in 270 fathoms. It is closely allied to Caryophyllia arcuata, Ed. & H. 
Caryophyllia berteriana, Duchassaing, Anim. Rad. des Antilles, a form with four 
incomplete cycles of septa and large costz, is found off Guadeloupe, and perhaps in 
68 fathoms off the Tortugas (Pourtales). 
