160 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



ALVANIA ALMO Bartsch, 1911. 



Proc. U. S. Nat. Mus., vol. 41, p. 359, pi. 32, fig. 1. 

 Santa Barbara Island, California. 



ALVANIA OLDROYDAE Bartsch, 1911. 



Proc. U. S. Nat. Mus., vol. 41, p. 361, pi. 32, fig. 2. 

 San Pedro. California, to South Coronado Island. 



Family RISSOINIDAE. 



Genus RISSOINA Orbigny, 1840. 



RISSOINA KELSEYI Dall and Bartsch, 1902. 



Nautilus, vol. 16, p. 94 ; Proc. U. S. Nat. Mus., vol. 49, p. 49, pi. 30, fig. 4. 

 San Pedro, California, to the Coronado Islands. 



RISSOINA CALIFORNICA Bartsch, 1915. 



Proc. U. S Nat. Mus., vol. 49, p. 55, pi. 33, fig. 1. 

 Catalina Island to South Coronado Island. 



RISSOINA BAKERI Bartsch, 1902. 



Nautilus, vol. 16, p. 9; Proc. U. S. Nat. Mus., vol. 49, p. 56, pi. 33, fig. 4. 

 San Pedro, California, to Coronado Islands. 



RISSOINA NEWCOMBEI Dall, 1897. 



Bull. Nat. Hist. Soc. Brit. Columbia, No. 2, p. 14, pi. 1, fig. 12. 

 Forrester Island, Alaska, to Vancouver Island. 



RISSOINA CLEO Bartsch, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 5S, pi. 33, fig. 3. 

 South Coronado Island. 



RISSOINA DALLI Bartsch, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 59, pi. 33, fig. 2. 

 San Pedro, California, to South Coronado Island. 



RISSOINA CORONADOENSIS Bartsch, 1915. 



Proc. U. S. Nat. Mus., vol. 49, p. 60, pi. 33, fig. 8. 



San Diego, California, to San Martin Island, Lower California. 



Family ANAPLOCAMIDAE. 

 Genus ANAPLOCAMUS Dall, 1895. 



ANAPLOCAMUS BOREALIS Dall, 1895. 



Proc. U. S. Nat. Mus., vol. 24, p. 550, pi. 38, fig. 4. 



South of Unimak Island, Alaska, in 61 fathoms. (U. S. Bureau of Fish- 

 eries). 



Family TRUNCATELLIDAE. 

 Genus TRUNCATELLA (Leach, 1818) Risso, 1826. 



TRUNCATELLA CALIFORNICA Pfeiffer, 1857. 



Proc. Zool. Soc, p. 111.— Binney, Terr. Moll., vol. 4, pi. 79. figs. 20. 22. 

 Santa Barbara to San Diego and San Martin Island, California. 



