326 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



5. Tellina {Eurytellina) hucogonin Dall, Gulf of California; Ion. 84 mm.; see 



p. 317. 



6. Mncoma silkana Dall, interior view, Sitka, Alaska; Ion. 42 mm. ; see ]>. 323. 



7. The same, external view. 



8. Mncoma krausei Dall, Icy Cape, Arctic Ocean; Ion. 23 mm. ; see p. 322. 



9. Mncoma leptonoidea Dall, dorsal view; Ion. 21 mm.; see p. 323. 



10. Telliim iche Dall, young shell, Catalina Island, California; Ion. 20 mm.; see 



p. 301. 



11. The same, interior view. 



12. Tellinn ( Ondnrdiu) htdlonl Dall, interior, showing rib; California; Ion. 16 mm. ; 



see p. 320. 



13. The same, external view. 



14. Tellina [Phyllodina) prisliphorn Dall, Lower California; Ion. 20 ram. ; see p. 316. 



15. Tellina {Peronidia) lulen Gray, Bering Sea; ion. 60 mm.; see p. 322. 



16. The same, view of the interior of the left valve. 



