SECONDARY AND TERTIARY FORMATIONS OF NORTH AMERICA. 117 



the boundary of the cell being defined by a deep continuous groove; the oval apertures were almost oblite- 

 rated and the pores rendered indistinct." 



" Locality. — Eutaw," [South Carolina, Eocene.] 



From the phrase " occasionally one or two foraminated vesicles at the corners of the 

 proximal margin," we entertain some doubt about the propriety of retaining this spe- 

 cies in the genus Eschara, suspecting that these " foraminated vesicles " may really 

 be special pores in connection with the opening of the preceding cellule, especially 

 since these pores do occasionally appear to belong to the cellule in. advance of the real 

 one. This is rendered more probable from the fact that Mr. Lonsdale does not appear 

 to have examined the interior of any of the cellules. However, not having seen the 

 species, and the figure given being very unsatisfactory, we do not feel warranted in 

 attempting to remove it. 



E. texta, n. s., fig. 1. — Colony either lamellar or in broad branches, (?) robust, 

 somewhat tortuous. Cellules very long and narrow, arranged in pretty regular quin- 

 cunx, but sometimes displaced by the excessive length of one cellule, separated by 

 very distinct lines between the rows, but the upper surface between the cells in the 

 same line is almost always continuous. Upper surface convex in both transverse and 

 longitudinal diameters, but more especially so in the latter, so that the shorter cellules 

 are high in the middle and with the ends much depressed ; no apparent markings on 

 the surface of the only specimen we have seen. Mouth small, semicircular or sub- 

 quadrate, with the proximal lip always straight ; sometimes bounded by a delicate 

 raised lip. The mouth is anterior, placed at the deepest part of the depression, and 

 occupies only about half the width of the cellule. No ovarian vesicles were observed. 

 Germinal plate and lateral walls thin, upper walls thick. 



The alternate elevations and depressions of the cellular surface of this remarkable 

 species give it, to the naked eye, very much the appearance of a woven fabric. The 

 o-reat length and the narrowness of the cellules assist the resemblance. We are not 



o o 



able to say positively whether or not this species is dichotomous, but believe not, since 

 the only specimen we have seen is a triangular mass, about three-fourths of an inch 

 long and about half an inch wide at the base. As we remark above, the length of 

 the cellules is variable, the longest being almost twice the length of the shortest. This 

 variation appears to take place generally in separate longitudinal rows, some rows 

 beinf composed almost exclusively of long cellules and others of shorter ones. The 

 cellules in the same row are not, however, always uniform. Internally the lateral 

 walls are straight, and thinner than the terminal ones. 



Under Eeclmra tulmlata are some comparisons between that species and this. They 

 are so different, however, that it will be almost impossible to confound them. We are 

 acquainted with no other species approaching this. 



From the Eocene white limestone, west of Charleston, S. C. Coll. W. M. G. 



