144 
PALEONTOLOGY OF NEW-YORK. 
Genus CALLOPORA (nov. gen.). 
[Gr. xaXXoS, Quicker, and -Tropes, pora.] 
Ramose or encrusting species of corals, having a columnar structure; cells tubular, with 
the apertures circular or petaloid, not contiguous, and having the intermediate spaces occupied 
by angular cell-like openings which are transversely septate; tubular cells rarely septate. 
The species of this genus are all beautiful corals in their structure and surface appearance. 
The first species under the genus often grows in large groups or cespitose masses, though it 
is sometimes seen incrusting other corals and attaching itself to some other substances. The 
terminations of the stems are sometimes hollow, and it has the aspect of a Bryozoa, but it 
is evidently a true coral. 
This genus includes species in many respects allied to Ceriopora of Goldfuss, and more 
nearly to those separated by de Blainville under the name of Heteropora. They possess to 
some extent the characters of Heliopora and Millepora, but are essentially distinct. The 
Heteropora crassa of Lonsdale (Murchison’s Sil. System, pag. 680, pi. 15, fig. 14), is pro¬ 
bably referable to this genus. Our specimens differ from Heteropora in the septate character 
of the cells and intercellular spaces, and in the columnar structure ; and, although sometimes 
approaching that genus in their mode of growth, are nevertheless more often solid, prismatic 
or columnar in structure, and more or less ramose or lobato-ramose in form. The true Hete¬ 
ropora from the chalk have round tubular cells, with minutely tubular interspaces ; but in no 
case have I been able to discover septa crossing the cells or interspaces, nor in this character 
mentioned by de Blainville. 
534. 1. CALLOPORA ELEGANTULA (». sp.). 
Pl. XL. Fig. 1 a -m. 
Coral consisting of cespitose or fruticulose groups, composed of small stems, frequently 
branching ; branches bifurcating or variously diverging from the stems, solid, extremities often 
hollow, or having a cup-like termination; apertures of cells circular, with intermediate an¬ 
gular cellular spaces; the circular apertures often having a smaller central point, or circle 
with rays extending to the outer walls. Intercellular spaces variable in extent, often irregular ; 
circular openings of cells usually destitute of rays ; cells tubular, extending to the axis in solid 
specimens, often filled and separating in prismatic forms. 
This is a very beautiful coral, and readily recognized by its small circular openings, which 
are usually separated from each other by cellular interspaces W'hich open on the surface in an¬ 
gular apertures. In some specimens the cells are absolutely contiguous, as far as they can be 
without compressing the circular walls, leaving triangular interspaces where three cells meet. 
In other cases there is a narrow row of meshes between the circular openings, separating them 
very slightly ; and again these are expanded and become two rows, or cover an irregular space. 
