NOKTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 173 
LEPTOTHYRA LURIDA Dali, 1885. 
Proc. U. S. Nat. Mus., vol. 8, p. 542.— Teyon, Man., vol. 10, pi. 39n, figs. 
27-29. ? 
Puget Sound to Cape San Lucas. 
LEPTOTHYRA BACULA Carpenter, 1864. 
Proc. Cal. Acad. Sci., vol. 3, pp. 177, 188. — Teyon, Man., vol. 10, pi. 39a, 
fig. 33. 
Puget Sound to San Martin Island, Lower California. 
LEPTOTHYRA PAUCICOSTATA Dali, 1871. 
Amer, Journ. Conch., vol. 7, p. 134, pi. 15, fig. 10. 
Monterey to Coronado Islands. < 
LEPTOTHYRA PAUCICOSTATA FENESTRATA Bartsch, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 358. 
Monterey to Coronado Islands. ' 
LEPTOTHYRA JUANENSIS Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 358. 
San Diego, California, to Tia Juana, Lower California. 
LEPTOTHYRA GRIPPI Dali, 1911. 
Nautilus, vol. 25, No. 3, p. 25. 
San Diego, California, 100 to 150 fathoms. 
Family LIOTIIDAE. 
Genus LIOTIA Gray, 1847. 
LIOTIA FENESTRATA Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 652 ; Proc. Cal. Acad. Sci., vol. 3, p. 158. — Teyon, 
Man., vol. 10, pi. 36, fig. 97. 
Monterey to Catalina Island,, California. 
LIOTIA ACUTICOSTATA Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 652 ; Proc. Cal. Acad. Sci., vol. 3, p. 158. — Teyon, 
Man., vol. 10, pi. 36, fig 1. 
Catalina Island, California, to Magdalena Bay, Lower California. )Turi^^UjLAj 2 ^ , 
LIOTIA ACUTICOSTATA RADIATA Dali, 1919. 
Proc. Biol. Soc. Wash., vol. 31, p. 8. 
San Diego and Coronado Islands. 
Subgenus Aeene H. and A. Adams, 1854. 
ARENE COOKEANA Dali, 1918. 
Proc. Biol. Soc. Wash., vol. 31, p. 8. 
South Coronado Island to Gulf of California. 
Subgenus Cynisca H. and A. Adams, 1854. 
CYNISCA FRICKI Crosse, 1865. 
Journ. de Conchyl., vol. 13, p. 55. 
“California” (Prick). ? West Indies. 
167980— 21— Bull. 112- 
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