PLATE IV. 



Fig. 1 a. Pecten (Amusium) Dalli E. A. Smith; 62.0; inside of lower valve. 



Page 209. 

 " 1 b. Same, inside of upper valve. 



" 2. Pecten (Pseudamusium) SigsheeiDaW ; ll.b. Page 223. 



" 3. Pecten (Propeamusium) Pourtalesianus Dall, var. marmoratus ; 13.5. 



Page 211. 

 " 4 a, 4 b. Pecten (Pseudamitsium) iniMJer "Loyhn; 12.5. Page 220. 

 " 5 a, 5 b. Dimt/a argentea DnW ; 12.0. Page 228. 

 " 6. Cardium ceramidiiin Dall ; 8.2. Page 269. 



" 7. Cardium peramahllis Dall ; 12.5. Page 269. 



" 8. ^6ra/i0jca Dall; 8.1. Page 278. 



" 9 a, 9b. Saxicava azaria Dall; 25.0. Page 317. 



