86 



SIXTEENTH REPORT OF THE CABINET OF NAT. HISTORY. 



The accompanying figure from the Report of Mr. Yanuxem illustrates 

 the greater part of the only known specimen of IJPHANTiENiA, and pre- 

 sents every character of importance. 



I 







ypHANT^NiA CHEMUNGENSis ( Vanuxem) . 



In the typical species of the genus, figured by Mr. Conrad, we have an 

 elongate subcorneal body with a reticulate surface and several rows of nodes, 

 which are longitudinally angular, and connected by an angular ridge ex- 

 tending between them. 



From analogy with the associated forms in the same strata, I consider 

 these bodies to have grown from the smaller extremity ; enlarging upwards, 

 and growing in cylindrical or obconical hollow stems, which may have 

 expanded above into flabellate fronds. 



