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72 PAUKONTOLOOT OF NEW-TORK. 



110. 1. CYATUTFORMIS {n. sp.— Genus undetermined). 



iPi. XXV. Figi. 6 a, b, e. 



Depressed cyathiform, concave in the centre ; edges thick, rounded, reflexed ; upper 

 surface rcteporoid or irregularly reticulated ; spaces somewhat elongated, rhomboidal. 



The outer surface is scarcely visible, but, as far as seen over the edge of the cup, it is 

 reticulated. The upper and inner surface has a reticulated structure, with almost un- 

 interrupted concentric rugose lines and fainter transverse lines. From the state of the 

 specimen, its structure cannot be fully made out, but it may belong to the Retepore family. 



Fig. 6 a. View of specimen, looking upon the upper or inner surface. 



Fig. 6 b. Lateral view of specimen. 



Fig. 6 e. Enlarged portion of the inner surface, showing the structure and arrangement of the cells. 



The form of this fossil is very sin^ilar to that of some species of Tragos or Scyphia, 

 figured by Goldfuss. 



Position and locality. In the Trenton limestone, Carlisle, Pennsylvania. 



{Cabinet of Mr. Coitxad.) 



Gehtjs ESCHAROPORA. 

 [ Qreek, srfj^ap, a scar, and ♦opa, pore or cell.] 



Character. Coral consisting of a solid cylindrical or subcylindrical stem, gradually tapering 

 above, expanded and attached by rootlike ramifications below; surface entirely celluliferous ; 

 mouths of cellules oval, scarcely contracted, enclosed in a rhomboidal space formed by 

 elevated oblique lines which cross the coral in two directions ; cellules consisting of oval 

 tubes of nearly equal dimensions throughout, which radiate in an ascending direction from 

 an imaginary axis. 



This genus is proposed to include the peculiar fossils figured on Plate XXVI. figs. 1 a, 

 by c, d, e, and fig. 2, which can scarcely fall under any genus already constituted. The 

 coral consists of a cylindrical stem, which is never branched in any specimens yet seen. 

 The opening of the cells upon the surface is very similar to Eschaea, but more like those 

 of the proposed Genus Stictopoha. In unworn specimens the surface presents the rhom- 

 boidal divisions, within which are the oval cellules as in the last named genus ; but it differs 

 from that genus in having no internal axis separable from the outer celluliferous crust, and 

 in the entire surface being covered with cellules, while the edges of the Stictopora are 

 usually free from them, being sharp, and often striated. 



