PLATE 35. 



Fig. I, 517. 1. Catenipora escharoides. ( Pao-. 127.) 



1 a. A portion of a hemispheric specimen, giving the usual characters of the species as it occurs iu Kew-Yorli. 

 1 b. The base of the same specimen, showing its mode of growtli from below, and the increase by interstitial 



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

 1 c. A fragment from a strong growing mass, preserving the transverse strise, and showing tubes somewhat 



larger than the preceding figure. 

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

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

 1 /. A vertical section of fig. 1 c, showing the transverse septa of the tubes, and also a confused cellular 



structure, which is probably due to crystallization, from the infiltration of siliceous matter into the 



interior. 

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



when magnified. 

 1 h. A longitudinal section of the interior of several tubes magnified, showing the stria?. 

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



intimately combined with the surrounding stone. 



u 



