VINCENTOWN FORMATION. 169 



Locality 161. — At Medford, along the creek just west of the 

 town, the Vincentown limesand is exposed, and the following 

 species of fossils have been recognized : 



Echinodermata. 



Pseudodiadema diatrema (Mort.) 

 Echinoid spines. 



Vermes. 



Serpula rotula (Mort.) 



Bryozoa. 



Onychocella digitata ( Mort. ) 

 Retelea ovalis G. & H. 

 Several undetermined species. 



PeeEcypoda. 



Polorthus tibialis (Mort.) 



Locality i/i. — On Mantua Creek, just below the mouth of 

 Bethel run, near Hurffville, the following species were collected 

 from the Vincentown limesand : 



Bryozoa. 



Onychocella digitata (Mort.) 



PeeEcypoda. 



Area quindecemradiata Gabb. 

 Gryphaeostrea vomer (Mort.) 

 Polorthus tibialis (Mort.) 



Locality lyo. — This locality is situated about J^ mile up the 

 'Creek from the last, and has yielded the following species : 



Vermes. 



Serpula rotula (Mort.) 



Bryozoa. 



Onychocella digitata (Mort.) 



