PLATE 35. 



Fig. ). 517. 1. Catenipoba eschaeoides. (Pas?- 127.) 



1 o. A portion ofa hemispheric specimen, giving the usual characters of the species as it oceurs in New-York. 

 1 6. The base of tlie same specimen, sliowing its mode of growth from hi'low, and tlje increase by interstitial 



cells, which appears like a bifarcatioii of a single tube. 

 1 c. A fragment from a strong growing mass, preserving the transverse stria-, ami showing inbi s somewhat 



larger than the preceding figure. 

 1 d. An individual where the growth is more slender, and the reticulate splices are smaller. 

 1 e. A vertical section of the same, contrasting with fig. 1 e. 

 \ f. A. vertical section of lig. 1 c, showing the transverse .septa of the tubes, and also a confn.sed cellular 



structure, which is prol>ably due to cry-stallization, from tlic infiltration of siliceous inalter into the 



interior. 

 1 g. A vertical section of a well preserved specimen, showing the external striated character of the tubes, 



vfhen magnified. 

 1 A. A longitudinal section of the interior of several tubes magnified, showing the strias. 

 I i. A figure showing the vertical section of a mass of this coral, where the spaces are filled, ami the whole 



intimately combined with the surrounding stone. 



