PLATE IS 



Rensselaeria cf. stewarti Clarke 



(See plate 7} 

 Page 79 



1-3 Three views of internal casts of a shell very closely allied to 



R. stewarti of the Dalhousie fauna. All x \]/ 2 

 Locality. Near Soccatean point, Moosehead lake 



Rensselaeria diania Clarke 



Page 80 



4-6 Views of internal casts showing the characters of the species 

 Locality. Misery stream, town of Sandwich 



Rensselaeria (Amphigenia) parva Clarke 



Page 8 1 



7, 8 Internal casts of dorsal and ventral valves, showing the normal a 



very slender outline 



Locality. Tomhegan point, Moosehead lake 



9 Umbonal portion of a dorsal cast, showing the impression of the per- 

 forated hinge plate, x 2 

 Locality. Stony brook, Moose river 

 10 Internal cast of a ventral valve 



Locality. Stony brook, Moose river 

 11-13 Casts of ventral valves showing approximate septa and perforated 



hinge plate 

 Locality. Near Soccatean point, Moosehead lake 



Megalanteris cf. ovalis Hall 



Page 8 1 



14 Internal cast of dorsal valve 



15, 1 6 Opposite sides of an internal cast of both valves 

 Locality. Telos lake dam 



Spirifer perimele Clarke 



P:i;;e 84 



17, 1 8 A dorsal valve and enlargement of its sculpture 

 19, 20 Sculpture casts of dorsal valves 

 21 Internal cast of ventral valve 



Locality. Tomhegan point, Moosehead lake 



