1917.] NATURAL SCIENCES OF PHILADELPHIA. 333 



Figs. 6, 7. — Oslrea sandvichensis. External and internal views of a specimen 



from Ford's Island. 

 Fig. 8. — Ostrea sandvichensis growing on Trochus sandwichensis. Ford's 



Island, Pearl Harbor. 

 Fig. 9. — Ostrea sandvichensis margaritoe. Ford's Island, Pearl Harbor. 



Plate XXII. — Figs. 1, 2. Sirombus hawaiensis n. sp. Two views of the type. 

 Pearl and Hermes Reef. 

 Fig. 3. — Turbonilla vitiensis clavus n. subsp. \iu Is. 

 Fig. 4:.— Turbonilla vitiensis n. sp. Viti Is. Xo. 20046, A. X. S. P. 

 Figs. 5, 6, 7. — Turbonilla varicosa A. Ad. Honolulu. 

 Fig. 8. — Teliina elizabethce n. sp. Flint Island. 

 Fig. 9. — Codakia thaanumi n. sp. Hilo, Hawaii. 



