Plate II. 
Page 
Figs. 1— 2. Arca (Anadara) Mortenseni n. sp. ...... Piet eons ict Ger nat : : 24 
— $8— 4. — (Secapharca) dichotoma, Desh. var. gratiosa m. Ae OEM RET CeaS hee em" 
— §--12. (Scapharca) indica (Gm.).. From specimens in SPENGLER’s collection ........... 30 
— 13-14. — Modiola plumescens, Dunk. ......... pei ethane ae ; Se a A OO. 
— 15. — Modiolaria nana, Dunk............ er teene: : Net Lae 50.3 AS) 
— 16—18. Pteria (Electroma) zebra, Reeve (>< 1*°/1).. 5 Te BME rena os se 
— 19—20. Pinna sp. (x7) SAAR IS on 3 eRe) ce es 54 
