146 



PALEONTOLOGY OF NEW-YOUK. 



535. 2. CALLOPORA FLORIDA {n. sp.). 



Pl. XL, Fig. 2 a -f. 



Coral explanate or incrusting, scarcely ramose, often fixing itself upon or incrusting other 

 corals ; cells tubular, opening upon the surface by floriform apertures, the margins of which 

 appear as if formed by segments of six or seven smaller curves ; in perfect specimens, each 

 angle of the aperture is furnished with an elevated papillose point. Intercellular spaces with 

 one or more rows of angular openings upon the surface ; vertical section showing the cells 

 tubular, with the intermediate spaces septate. 



This species differs from the preceding, both in the form of the apertures of the cells, and 

 in its habit of growth : the general aspect of the surface in other respects is not much unlike. 

 It rarely grows in extended branching forms, but the branches are flattened or palmate, and 

 end in thickened terminations, in which character it differs widely from the preceding species. 

 Its more common habit is that of growing upon or enveloping some other coral, and in this 

 condition takes on somewhat the form of the body on which it grows, and rarely attains to 

 large dimensions. The surface has a coarser aspect than the preceding or following species, and 

 there is no difficulty in distinguishing it from those. 



Fig. 2 a. An enveloping mass, consisting of several distinct layers, which, at the commence- 

 ment of growth, attached itself to a branch of C. elegantula. During a cessation of 

 growth in one part, another species of the same genus commenced growth upon 

 the surface of this species, which is again partly overgrown by it at a subsequent 

 period, and thus we have the three species in one specimen. 

 Fig. 2 i. A portion of the surface enlarged, showing the form of the apertures and of the inter- 

 cellular spaces. 

 Fig. 2 c. A portion of a more perfect specimen, showing the elevated points at the angles of the 



cells. 

 Fig. 2 d. A. section enlarged, showing the tubular structure, its connexion with C. elegantula, and 



the surface of C. aspera in its connexion with the other two. 

 Fig. 2 e. A fragment giving some appearance of branching in a palmate form- 

 Fig. 2 /. A section showing the septate character of the intercellular spaces. 



Position and locality. In the decomposing calcareous shale at Lockport. 



536. 3. CALLOPORA LAMINATA (n. sp.). 



Pl. XL. Fig. 3 o - e. 

 Coral massive, irregular in form, composed of thin solid concentric laminae penetrated by 

 minute tubular cells, which open upon the surface by floriform mouths ; spaces between the 

 tubes appparently solid, equal to or greater than their diameter ; lower surface covered by a 

 concentrically striated inembranous expansion. 



