Plate IV. 



Page 



Figs. 1—2. Tellina (Macoma) liliiim, Hani Ill 



— 3 — 5. — (Macoma) tenuisciilpta n. sp 112 



— 6—8. Psammobia simplex, Sow 116 



— 9—11. Theora lata, Hinds 118 



— 12 — 13. Donax \Serrula} incarnatits, Chemn 119 



— 14—16. Ervilia bisculpta, Gould 123 



— 17-19. Mactra (Trigonella) purpurea, Spengl. From Spengler's type-specimens = M. cuneata, 



Ciiemn.) 124 



— 20 — 23. Mactra (Mactrinula) depressa, Spengl. From Spenglers type-specimens 126 



— 24. Raëta pulchella, Ad. & Reeve 127 



— 25—27. Cytherea (Caryalis) minuta, Koch 132 



— 28—31. Circe lirata, Römer 135 



— 32-33. — Melvilli n. sp 135 



