122 THE NAUTILUS. 



NOTES ON ACTEOCINA 



BY A. M. STRONG 



Dr. Dall in the January NAUTILUS gives the reasons for 

 some of the confusion in the published ranges for the West 

 Coast members of the genus Acteocina to which I called at- 

 tention in the October number. Unfortunately he does not 

 give the corrected range for A. culcitella } which is much 

 greater than that given in his "Summary". For the present, 

 at least, it will be well to consider that the known ranges are 

 fixed by the large amount of material that has accumulated 

 in the United States National Museum. If this is done the 

 ranges given in the older publications will have to be con- 

 siderably emended. It Avould also seem that the published 

 descriptions should be extended to cover the variations found 

 in the different individuals of the several species. 



This would give us, as I understand it, the following known 

 ranges for the West Coast species : 



A. eximia (Brd.). Confined to the Oregonian fauna as a 

 living shell, extending from Puget Sound northward to Ko- 

 diak Island. Also found as a fossil in Southern California 

 but not living as given by Arnold. 



A. culcitella (Old.). A variable species with a wide range, 

 Puget Sound and northward to Kodiak Island, off the Golden 

 Gate, and through the Santa Barbara Channel, Santa Bar- 

 bara to at least as far south as San Diego. Also fossil in 

 Southern California. 



A, cerealis (Gld.). With the last and probably only a 

 junior of it, but listed as a separate species in collections and 

 literature, both as living and fossil. 



A. inculta (Gld.). Through the Santa Barbara Channel 

 and extending northward to Monterey and southward to San 

 Diego. 



A. carinata (Cpr.). A Gulf of California species extend- 

 ing as far north as San Diego, and if Zetek's list is correct, 

 as far south as Panama. 



