CATENIPORA. SYRINGOPORA. 259 
composed of a congeries of diverging or ascending parallel, 
contiguous, prismatic tubes, covered by pores, divided by 
_lamellze, and communicating by lateral foramina. 
_ The corals of this extinct genus abounded in the Silurian 
_and Devonian seas; the remains occur with those of other 
fossil zoophytes of that epoch in great numbers, both in 
Europe and North America. I have many beautiful examples 
from the Silurian rocks of the Ohio and N lagara, by favour 
of Dr. Owen, of New Harmony, and Dr. Yandell, of Louis- 
ville, in which the cells are filled up with calcareous spar. 
The varied markings on many of the Babbicombe marbles, 
and Torquay pebbles, are derived from the enclosed Favo- 
sites (Wond. p. 643). 
Another species (Favosites Glothlandica) occurs in masses 
of a subconical shape, and is common in some of the Si- 
lurian limestones. A fragment, to show the structure, is 
figured Lign. 88, fig. 3. 
Carenipora (Wond. p. 644, fig. 3).—Polyparium hemi- 
‘spherical, composed of vertical anastomosing lamelle 5 cells 
tubular, oval, terminal, united laterally. The oval form of 
the cells when united laterally, and the flexuous disposition 
of the lamellz, give rise in transverse sections to elegant 
catenated markings, from which appearance the fossil has 
received the name of chain-coral.* The species figured (C. 
escharoides) in Wond. is common in the Silurian limestones, 
and sometimes forms hemispherical masses more than a foot 
in diameter. The chain-coral is extensively distributed 
through the Silurian rocks of the United States. Coloured 
figures of this exquisitely beautiful coral are given in Pict. 
Atlas, pl. xxxv. 
SYRINGOPORA RAMULOSA. Lign. 88, fig. 2. (Wond. p- 641.) 
These corals bear a general resemblance to the Organ-pipe 
Coral of Australia. The polypidom is composed of long, 
cylindrical, vertical tubes, distant from each other, and con- 
* Org. Rem. vol. ii. pl. iii. figs. 4, 5, 6. 
