PLATE 30 



Camarotoechia dryope (Billings) 



Page 112 



1 A dorsal valve 

 Locality. Edmunds Hill 



Camarotoechia sp. 



. Page iia 



2 (_ast or a ventral valve 

 Locality. Edmunds Hill 



Spirifer macropleuroides Clarke 



Page 119 



3 . Dorsal view of the type specimen 

 4. Enlargement of the surface 



Locality. Edmunds Hill 



Spirifer aroostookensis Clarke 



(See plate 34) 

 Page 119 



5 The type specimen, a dorsal valve 

 9 Enlargement of the surface, x 10 



Locality. Edmunds Hill 



Spirifer cymindis Clarke 



Page 117 



6 Internal cast of ventral valve 



7 Exterior of ventral valve 



8 Exterior of dorsal valve 



10, 1 1 Internal casts of ventral and dorsal valves 

 Locality. Edmunds Hill 



Spirifer cymindis var. sparsa Clarke 



Page 118 



12 Internal cast of ventral valve not typical of the variety but showing 

 features of plication between that and the species 



13, 14 Internal casts of two ventral valves with sparse angular plications. 

 x i */ 



Locality. Edmunds Hill 



226 



