PLA^TE IX. 



Page. 



Fi^. 1. Spirifer rcobina 90 



1. Dorsal view of a inatnro specimeu, with tlie ^rauules of the surface woru off. 

 1 a. Side view of same. 

 1 h. Ventral view of same. 



1 c. A portion of the granular surface magnified. 



Id. A cardinal view of a ventral valve, showing area and foramen. 



Fig. 2. Spirifer cameratus? 91 



'2. Ventral view of an imperfect specimeu. 



2 a. Side view of same. 



Fig. 3. Atiiyris Rois.syi 82 



3. A side view of a large specimen accidentally compressed. 



3 a. Ventral view of same. 



3 h. Dorsal view of same. 



Fig. 4. Athvris? peusinuata 81 



4. An antero-ventral view, showing the profound sinns of the front. 



4o. A dorsal view of same; a part of the shell being removed so .as to show the 

 muscular scars. 



4 h. Side view of same, with beak and contiguous parts broken away. 



Fig. ,'). GONIATITES GONIOLOBUS 98 



5. A profile view of an internal cast, with the body-chamber broken away. 



5 a. Side view of same. 



5 h. Diagram of lobes and sinuses of one of the septa, natural size. 



Fig. G. Spirifer opimus?. A ventral view 88 



, Fig. 7. AvicULOPECTEN' Utauensis 95 



7. A left ? valve, natural size. 



7 o. A portion of the surface of same, magnified to show the minute, crowded, concentric 



striic. 

 7 6. A mould of a larger individual in the rock. 

 7 c. A mould of a small right valve of apparently the same. 

 7 d. A cast of another .specimen of same, differing a little in form. 



