NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 27 



LYONSIA (CALIFORNICA var.?) NESIOTES Dall, 1915. 

 Proc. U. S. Nat. Mus., vol. 49, p. 453. 



Catalina and Coronado Islands, to Magdalena Bay. 



LYONSIA PUGETENSIS Dall, 1913. 



I'roc. U. S. Nat. Mus., vol. 45, p. 595. 

 Chignik Bay, Alaska, to Puget Sound. 



Subgenus Allogramma Dall, 1903. 



ALLOGRAMMA AMABILIS Dall, 1913. 



I'roc. U. S. Nat. Mus., vol. 45, p. 594. 



Off Santa Barbara Channel, California, 534 fathoms. 



Subgenus Entodesma Pbilippi, 1845. 



ENTODESMA INFLATUM Conrad. 1837. 



Journ. Acad. Nat. Sci. l'hila., vol. 7, p. 248, pi. 19, fig. 10. 

 In sponges, Vancouver Island to Guayaquil. 



Section AGRIODESMA Dall, 1900. 



ENTODESMA SAXICOLA Baird, 1863. 



I'roc. Zool. Soc, p. 70: Proc. U. S. Nat. Mus., vol. 49, p. 45G. 

 Aleutian Islands to Cape Colnette, Lower California. 



ENTODESMA SCAMMONI Dall, 1871. 



Anier. Journ. Conch., vol. 7, p. 142, pi. 1G, fig. 3. 



Port Simpson, British Columbia (Scammon). San Diego (Orcutt). 



Genus MYTILIMERIA Conrad, 1837. 



MYTILIMERIA NUTTALLII Conrad, 1837. 



Journ. Acad. Nat. Sci. Phila., vol. 7, p. 246, pi. 19, fig. 5. 



In compound Ascidians. Vancouver Island to San Diego, California. 



Superfamily POROMYACEA. 



Family POROMYACIDAE. 

 Genus POROMYA Forbes, 1844. 



Subgenus Dermatomya Dall, 1908. 



DERMATOMYA TENUICONCHA Dall, 1913. (Plate 3, fig. 10.) 



Proc. U. S. Nat. Mus., vol. 45, No. 2002, p. 59G. 

 Alaska Peninsula to Coronado Islands, in deep water. 



DERMATOMYA BUTTONI Dall. 1916. 



Proc. U. S. Nat. Mus., vol. 52, No. 21S3, p. 406. 

 Monterey, California (Button). 



DERMATOMYA BERINGIANA Dall. 1916. 



Proc. U. S. Nat. Mus., vol. 52, No. 2183, p. 406. 

 Aleutian Islands to Tillamook, Oregon. 



