Maryland Geological Survey 87 



rad), Grammysia arcwata (Conrad), Nucula corhuliformis Hall, Nucu- 

 lites ohJongatus Conrad, Nuculites triqueter Conrad, NucnlHes grahaui 

 Prosser, Palaeoneilo constricta (Conrad), Palaeoneilo emarginata (Con- 

 rad), Falaeoneilo tenuistriata (Conrad), Leda diversa Hall, Nyassa ar- 

 guta Hall (?), Aviculopecten lyrinceps (Conrad), Paracgclas lirata Con- 

 rad, Phurotornaria (Trepospira) roialia Hall (?), DiapJtorostoma line- 

 atum Conrad (?), Tentaculites attenuatus Hall, Tentaculites bellulus 

 Hall, var. potomacensis Prosser, Phacops rana (Green). 



On the road about one-fourth mile north of Green Spring Furnace 

 the following species were collected : Chonetes mucronatus Hall, Cho- 

 netes coronatus (Conrad), Chonetes lepidus Hall, Rlbipidomclla sp., 

 Cyrtina JiamiUonensis Hall, Tentaculites attenuatus Hall. 



