PLATE 22 



Modiomorpha varia (Billings) 



Page i6o 



1-3 Billings's originals of Modiolopsis varia, not before figured 

 Grande Greve limestone. i, 2, Grande Greve ; 3, Indian Cove 



4, 5 Possible representatives of the same species 

 Grande Greve limestone. Grande Greve 



Goniophora mediocris Billings 



Page 161 



6, 7 Views of the same example 



Grande Greve limestone ; division i. Grande Greve 

 8 A specimen regarded as of this species but much compressed vertically 

 St Alban beds Cape Rosier Cove 



Sphenotus truncatus (Conrad) 



Page 232 



9, 10 Right valves 



1 1 A left valve 



12 An incomplete right valve doubtfully referred to this species 

 Gaspd sandstone. Gaspe Basin 



Phthonia cylindrica Hall 



Page 232 



13 A left valve, x ij4 



Gaspe sandstone. Gaspe Basin ' 



Goniophora tethys (Billings) 



Pjge i6r 



14-16 Views of the specimens in the Ottawa Museum identified as Bil- 

 lings's original of S a n g u i n o 1 i t e s tethys 



Grande Greve limestone. Grande Greve 



296 



