288 DicTYOsPONGiD.*:. 



PLATE XLV. 



HYPHANT^NIA, Vanuxem (emend.). 



Page 137. 

 (See Plates XXVIII and XXIX.) 



HYFiTATfi^NiA CirEMTjNGENsis, Vanuxem. 



Page 139. 

 (See Plates XXVIII and XXIX.) 



Figure 1. Fragment of the largest iutlividual observed, slightly fractured 

 near the middle. This specimen differs from those elsewhere figured 

 in having the apertures left by the intersection of the ligulate bands 

 circumscribed by an encroachment of the spicular tissue. The 

 diameter of this specimen when entire was not less than two feet. 

 Chemung group. Union township, Broame county, New Yorh. 



