Spirifer subcuspidatus Schnur var. lateincisus Scupin 



Page 116 



15, 1 6 Internal casts of ventral valves 



1 7 Exterior of dorsal valve 



1 8 Internal cast of dorsal valve 



19 Internal cast of ventral valve 

 Locality. Presque Isle stream 



Chonetes aroostookensis Clarke 



Page 120 



20 Ventral valve, somewhat more rhomboidal than usual 



21 Interior of a dorsal valve 



22 Internal cast of a ventral valve 



23 The dorsal hinge, x 2 



24 Internal cast of a ventral valve, x 3 



25 Exterior of a small ventral valve, x 3 

 Locality. Edmunds Hill 



Chonetes paucistria Clarke 



Page 122 



26 Sculpture cast of ventral valve showing the relatively sparse and sharp 



plication, x 2 



27 Enlargement of the surface, x 4 



Locality. Edmunds Hill 



227 



