PLATE VI. 



Fig. 



Names of the shells. 



PAGE 



Localities from which the specimens figured 

 were obtained. 



1. 



Astarte mutahilis .... 



46 



2. 



Mactra ponderosa .... 



47 



3 a. 



Anoiuia striata (upper valve) 



41 



b. 



— — (inside of 







upper valve) .... 



41 



d. 



— — (thickened 







portion of lower valve) . 



41 



e. 



— — (lower valve 







with opening) ... 



41 



/. 



— — (upper valve 

 showing early part plain, 







afterwards striated) . . 



41 



4 a. 



Pectunculus pilosus, var. in- 







suhricus) . . . 



43 



b. 



Inside lining of ditto . . . 



43 



5 a. 



Pectunculus glycimeris . 



43 



b. 



— — var. 







nummarius . . . 



43 



6 a. 



Thracia papyracea juv. {villo- 







siuscula ?) ..... 



47 



b. 



juv. . . 



47 



7. 



Pholas intermedia .... 



48 



8 a. 



Area tetragona .... 



44 



b. 



— — .... 



44 



Cor. Crag, near Orford. 

 Red Crag, Waldringfield. 

 Cor. Crag, near Orford. 



Cor. Crag, Sutton. 



Cor. Crag, near Orford. 



Cor. Crag, Sutton. 



Cor, Crag, Sutton. 



Cor. Crag, Ramsholt. 

 Cor. Crag, Sutton. 

 Cor. Crag, Sutton. 



9 a. Mytilus edulis, var. c/allo- 



provincialis ... 42 

 b. — — var. ungu- 



latus ..... 43 



Cor. Crag, Sutton. 



Chillesford bed at Sudbourn Church Walks. 



Chillesford bed at Sudbourn Church Walks. 



Cor. Crag, Gedgrave. 



Cor, Crag, Sutton. 



Cor, Crag, Sutton. The specimen to which 



the names A.puella and A. nodulosa have 



been assigned. 



Red Crag, Sutton. 

 Cor. Crag? Boyton. 



