﻿400 DESCRIPTIONS OF NEW SPECIES OF 



These specimens are remarkable for their line state of preservation. For distinct- 

 ness, the lamellae are not represented as numerously on fig. 15 as they really exist. 

 Fig. 16 is correct in number. 



HIPPOTHOA. 



H. irregularis, G. and H. PL 69, fig. 18, 20. 



Proc. Acad. Nat. ScL 1860, p. 366. 



Colony spreading, on shells, forming straight or but slightly curved lines ; branching 

 nearly at right angles, though generally from but one side of the cell ; cells oval, 

 flattened, placed closely together and united by a stout pedicle ; opening nearly cen- 

 tral with its greatest diameter in the direction of the length of the cell, often with an 

 ovarian vesicle at the distal extremity. 



Locality. — Timber Creek, N. J. Allied to H. simplex, d'Orb., in the shape of the 

 cell. 



CELLEPORA. 



C. bilabiata, G. and H. PI. 69, figs. 21, 23. 



Proc. Acad. Nat. ScL, p. 366, 1860. 



Colony encrusting, generally in elongated patches ; cells in lines, arranged in irregu- 

 lar quincunx, convex ; opening, viewed from above, nearly circular ; cell walls above 

 and below the mouth project, forming two labiate processes. 



Locality. — Timber Creek, N. J. 



C. carinata, G. and E. PI. 69, figs. 24, 26. 



Proc. Acad. Nat. ScL, 1860, p. 266. 



Colony incrusting ; cells in quincunx ; walls of cells meeting anteriorly, forming a 

 carina, whose apex projects forward and towards the oral opening ; apex often perfo- 

 rated ; carina often diminishing as it approaches the cell below. 



Locality. — Timber Creek, N. J. 



C. ttpica, G. and H. PL 69, figs. 27, 29. 



Proc. Acad. Nat. ScL, 1860, p. 366. 



Colony encrusting, in large patches ; cells arranged in radiating lines, usually in 

 quincunx, irregular exteriorly, small, rhomboidal ; spaces between the oral openings 

 wide, perforated by numerous, large accessory foramina. Encrusting a Terebratida 

 Harlani, Morton, to which is also attached a specimen of Ostrea panda, M., 

 formerly in Dr. Morton's collection, now in the collection of the Academy. 



Locality. — Marl of New Jersey. 



RETICULIPORA. 



R. sagena, G, and H. PL 69, figs. 30, 32. 

 Proc. Acad. Nat. ScL, 1860. p. 366. 



