NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 69 



Genus IRENOSYRINX Dall, 1889. 



IRENOSYRINX PACIFICA Dall. 1908. 



Bull. Mus. Comp. Zool., vol. 43, No. G, p. 270, pi. 12, fig. 3. 

 Southwest of Sitka, Alaska, In 1,509 fathoms. 



? IRENOSYRINX CREBRISTRIATA Da'.l, 1908. 



Bull. Mus. Coinp. Zool., vol. 43, p. 272, pi. 13, fig. 10. 

 Southwest of Sitka, Alaska, in 1,569 fathoms. 



Genus CYMATOSYRINX Dall, 1889. 



Suhgenus Elaeocyma Dall, 1917. 

 ELAEOCYMA JOHNSONI Arno'.d, 1903. 



Pal. San Pedro, p. 206, pi. 8, fig. 17. 

 San Pedro, California. Pleistocene. 



ELAEOCYMA EMPYROSIA Dall, 1899. 



Nautilus, vol. 12, p. 127; Proc. U. S. Nat. Mus., vol. 56, pi. 4, fig. 1. 

 San Pedro to San Diego, California. 



ELAEOCYMA HEMPHILLI Stearns, 1871. 



Proc. Cal. Acad. Sci., vol. 5, p. SO, pi. 1, fig. 3. 

 Santa Barhara to the Gulf of California. 



ELAEOCYMA HALOCYDNE Dall. 1919. 



Proc. U. S. Nat. Mus., vol. 56, p. 11, pi. 4, fig. 4. 



San Pedro and the Santa Barbara Islands, California. 



Genus CLATHRODRILLIA Dall, 1918. 



CLATHRODRILLIA RENAUDI Arnold, 1903. 



Pal. San Pedro, p. 2US, pi. 8, tig. 5. 



San Pedro, California. Also Pleistocene. 



Section CARINODRILLIA Dall, 1911. 

 CLATHRODRILLIA. species. 



Off Santa Rosa Island, California, in 53 fathoms. 



Subgenus Suavodrillia Dall, 191S. 



SUAVODRILLIA KENNICOTTII Dall, 1871. (Plate 11, 6g. 7.) 



Amer. .lourn. Conch., vol. 7, p. 102, pi. 16, fig. 2. 

 Bering Strait south to the Aleutian Islands. 



? SUAVODRILLIA WILLETTI Dall. 1919. 

 Proc. U. S. Nat. Mus., vol. 56, p. 29. 

 Forrester Island, Alaska. 



Subgenus Moniliopsis Conrad, 1SG5. 



MONILIOPSIS GRIPPI Dall, 1919. 



Proc. U. S. Nat. Mus., vol. 56, p. 27, pi. 8, fig. 2. 

 San Diego, California. 



