128 MONOGRAPH OF THE FOSSIL POLYZOA OF THE 



" Cells oblon" ; rows radiating, divided longitudinally by a furrow, but not separable mecbanically ; no 

 transverse furrows between successive cells ; surface slightly convex, with well denned, large, round pores ; 

 mouth circular, boundary slightly thickened, two small protuberances on the proximal edge, sometimes a 

 small tooth on each side." 



" But one condition of growth of this species was noticed." " The cells were in general regularly ar- 

 ranged with reference to the individual rows; but there was no uniformity of disposition as respected the 

 whole surface. Their length was about one-fourth of a line, and breadth one-sixth. The interpolated, or 

 additional series, sprung from the side of an oval termination ; but from their mode of insertion they might 

 be considered as having had an independent origin, or having been developed from gemmules. In every 

 case, however, the first additional cell had been clearly derived from that in which the regular successive 

 cell did not occupy the whole of the distal termination, their being in both instances, the same want of a 

 distinct transverse separating line, while between the interpolated and the other pre-existing rows, the 

 regular longitudinal furrow was continued. No signs of accessory foramina or of gemmuliferous (?) vesicles 

 were noticed." 



" Locality. — Petersburg," Virginia, (Miocene.) 



We are not acquainted with this species, except through the description given 

 above, and a wood cut. The cellules appear to be oblong, with their sides parallel ; 

 surface pierced sparsely by rounded pores ; mouth large, occupying the whole of the 

 distal portion of the cellule and with a thickened edge or lip, sometimes emarginate 

 at the proximal edge. 



C. Formosa, Tuomey and Holmes, Pliocene of South Carolina, p. 12, pi. 4, fig. 6. 



" C. incrustars; eellulis ovatis, immersis, aequalibus, subquincuncialibus, vel sine ordine depositis, poris 

 minimus cinctis ; ore magno, rotundo." 



" Incrusting; cells ovate, immersed, equal, somewhat quincunx or disposed irregularly, surrounded by a 

 row of minute pores." (Mouth large, round.) 



" The distinguishing character of this beautiful species is the row of pores bounding the cells ; on the 

 sides of the cells the pores are in double rows and seen obliquely, giving the cells the appearance of serial 

 arrangement. Vertically the cells are separated by a single row of pores. This regularity is only observed 

 when there has been no interference, for on other portions of the same specimen both the cells and pores 

 are irregular. The mouth is large and but slightly raised." 



We are not acquainted with this species, nor with any other described for the first 

 time in the above work. From the figure given, it appears to resemble somewhat our 

 species C. Janewayi, but it differs in the cellules being broader, with a larger mouth, 

 not bounded by a distinct lip, and in the punctations on the surface being confined to 

 a row along the edge, as in Beptocelleporaria umhilieata. From the latter species it 

 can, however, be at once distinguished by the absence of the " special pores " behind 

 the opening, and in not consisting of more than one layer. 



This species, with the others in the above work, are quoted as Pliocene.* The 

 locality is Darlington District, S. C. 



* In regard to the use of the terms Pliocene and Miocene in this country, it will probably be found on more 

 careful examinations, that there is no real division existing between the two so-called formations. A striking 

 proof of this will be found in the concise table given by my friend Prof. Holmes, in the above work. In speak- 



