FOSSILS FROM BEAUFORT AND MONTMORENCY. 483 



beds vary iu thickness from four or five inches up to a foot, and contain 

 several characteristic species as follows : 



Pachydidya acuta ; Leptcena sericea ; 



Ptilodictya falciformis ; Orthis testudinaria ; 



Prasopora lycoperdon ; Murchisonia gracilis ; 



Crania, sp. uud. ; Endoceras proteiforme ; 



Schizocrania. or Discina; Illcemis, sp. uud.; 



Lingula riciniformis ; Calymene senaria; 



Strophomena alternata ; Dalmanites calliceplialus. 



Beauport. — Proceeding farther eastward along the line of outcrop, the 

 Trenton occurs at Beauport and at Parent's quarries, where the limestones 

 are overlain by the black bituminous shales of the Utica. The following 

 species of fossils were obtained by Mr. St. Cyr, curator of the museum of the 

 Department of Public Instruction, Quebec : 



Amplexopora discoidea; Conularia trenfonensis ; 



Prasopora lycoperdon ; Orthoceras, sp. nov. ; 



Lingula obtusa; Asaphus platycephalus ; 



Strophomena deltoidea; Calymene senaria; 



Anastropliia hemiplicata ; Ceraurns pleurexanthemus. 



Montmorency. — The Montmorency river at and above the falls, before 

 plunging its waters headlong down the steep height of 251 feet, flows over 

 Laurentian or Archean rocks. It has cut its way through the thinly bedded 

 impure limestones, which are often interstratified with very thin beds of fissile 

 shale, such as is also said to occur in the lowest beds of the quarry at Charles- 

 bourg. Along each bank on this river the Trenton is well developed and 

 carries with it a large assemblage of fossils, among which Trinucleus concen- 

 tricus, Bellerophon bilobatus and Solenopora compacta may be said to occur in 

 great abundance. Along the left bank of the river and above the bridge 

 the following species were obtained by Dr. Ells and the writer : 



Pachydictya acuta ; Bucania punetifrons ; 



Prasopora lycoperdon ; Murchisonia gracilis ; 

 Solenopora compacta; " perangulata; 



Lingula curia (?) ; Orthoceras, sp. nov. ; 

 Strophomena alternata ; " laqueatum (?) ; 



Leptcena sericea ; Vanuxemia, sp. und. ; 



Orthis testudinaria; JBCarpes, sp. und. ; 



" pectinella ; Encrinurus vigilans (?) ; 



Anazyga rec urvirostra ; Asaphus platycephalus ; 



Zygospira (?) modesta; Ceraurus pleurexanthemus ; 



Conularia trentonensis ; Illcenus milleri. 

 Bellerophon bilobatus ; 



