Maryland Geological Survey 67 



Hall, Chonetes setiger (Hall), Tropidoleptus carinatus (Conrad), Cyr- 

 tina hamiltonensis Hall, Spirifer mucronaUis (Conrad), Spirifer granu- 

 losus (Conrad), Arnbocoelia umbonata (Conrad), Vitulina pustulosa 

 Hall, Tellinopsis subemarginata (Conrad), Nucula corbuUformis Hall, 

 Nucula beUistriata (Conrad), NucuUtes oblongatu^s Conrad, Pterinea 

 flabellum (Conrad), Paracyclas lirata Conrad, Pleurotomaria (Bem- 

 hexia) sulcomarginata Conrad, Oiihoceras bebryx Hall (?), Orthoceras 

 constrictum Vanuxem. 



On the south side of the Potomac River, about 3 miles south of Cum- 

 berland and on the east side of Knobly Mountain, the following species 

 were collected: Chonetes cf. scititlus Hall (these specimens are larger 

 than those figured but they have the outline and the large number of 

 strife), Chonetes setiger ( ?) Hall, Chonetes lepidus Hall, Spirifer mucro- 

 natus (Conrad), Protliyris lanceolata Hall, Tellinopsis subemarginata 

 (Conrad), Nucula corbuUformis Hall, Niiculites triqueter Conrad, Pa- 

 laeoneilo cf. plana Hall, Palaeoneilo clarhei Prosser, Modiella pygmaea 

 (Conrad), Paracyclas lirata Conrad, Pleurotomaria (Bembexia) sulco- 

 marginata Conrad, Orthoceras constrictum Vanuxem, Orthoceras emaccr- 

 atum (?) Hall, Spyroceras crotalum (Hall), Spyroccras nwntium Hall. 



Four miles south of Cumberland on the West Virginia side of the 

 Potomac Eiver opposite Madder's Island, the following species were 

 obtained: Chonetes cf. scitulus Hall (large specimens similar to those 

 from south bank Potomac Eiver, 3 miles south of Cumberland), Cama- 

 rotoechia prolifica Hall, Spirifer mucronatus (Conrad), Arnbocoelia 

 umbonata (Conrad), Nucula corbuUformis Hall, NucuUtes oblongatus 

 Conrad, NucuUtes triqueter Conrad, Modiella pygmaea (Conrad), Pleuro- 

 tomaria (Bembexia) sulcomarginata Conrad, Cyclonema hamiltoniae 

 Hall, Loxonema sp. (fragment of internal impression). 



Exposure at Wolfe Mill. — Below Wolfe Mill or Folks Mill along the 

 eastern bank of Evitts Creek are exposures of the rather coarse, bluisli, 

 calcareous Hamilton shales. This locality which is on the National 

 Road about 3 miles northeast of Cumberland, is a well-known collecting 

 place of the Cumberland geologists, and the late Robert H. Gordon 

 and others have obtained ven- good specimens of Hamilton fossils. To 



