50 
2555 Zonitoides alliaria Drap. 
1864 Zonitoides arboreus 
1866 Zonitoides selenitoides 
1867 Zonitoides minusculus 
1868 Zonitoides leviusculus 
1869 Zonitoides milium pugetensis 
2006 Zonitoides neomexicanus 
1359 Zonitoides (Pseudahyalina) pugetersis 
1956 Zonitoides Randolphi 
1865 Zonitoides limatulus 
2720 Zonitoides milium 
BA OE 
LITERATURE 
2232 Arnold, Ralph, and Harold Hannibal: The marine tertiary 
stratigraphy of the north Pacific coast of America. Am Phil 
soc pr 52:559-605, pl 37-48, 1913. 
2233 Arnold, Ralph: Descriptions of new cretaceous and tertiary 
fossils from the Santa Cruz mountains, California. U.S. Nat’l 
Mus pr 34:345-390, pl 31-37. Wash. 1908. 
2234 Arnold, Ralph: New and characteristic species of fossil 
mollusks from the oil-bearing tertiary formations of Santa 
Barbara county, California. Smithsonian misc coll 50:419- 
447, pl 50-58. 1907. 
1991 Ashmun, E. H. 
Collecting in Arizona and New Mexico. Nautilus 13:13-17. 
2579 Bailey, Jr., Joshua L. 
Shells of La Jolla, Cal. Nautilus 21:92 (list of species omitted 
from above list that he has collected). 
2372 Baker, Frank C.: 
Northern Idaho ghells. Nautilus 27:104. 
2041 =Baker, Fred. 
Cruising and collecting off the coast of Lower California. 
Nautilus 16:25-29. 
List of shells of San Martin Island, Lower California. Nau- 
tilus 16:40-43. 
2060 Baker, Fred. 
Shell collecting in Puget Sound and Alaska. Nautilus 24: 
A 44-47. With list of shells collected. Includes Nos 2061- 
2236 Bartch, Paul: See John B. Henderson. 
564 Bartsch, Paul: 
3110 Bartsch, Paul: 
The recent and fossil mollusks of the genus Diastoma from 
the West Coast of America. U.S. natl mus pr 39:581. 
2658 Bartsch, Paul: 
Notes on the genus Sonorella, with descriptions of new species. 
Smith Misc Coll 47:187-200, t 28-33. Notes on Nos. 2659-2670; 
also perceiver Fisheri, Baileyi and variety Orcutti, Dalli and Ash- 
muni. 
574 Bartsch, Paul: 
West American mollusks of the genus Triphoris. U. S. nat. 
mus, pr 33:249-262. Treats of the species following under num- 
bers 575-590. 
593 Bartsch, Paul 
New mollusks of the family Vitrinellide from the west coast 
of America. U.S. nat, mus pr 32:167-176, figures. Describes the 
following, numbered 594-604. 
2983 Bartsch, Paul: 
The recent and fossil mollusks of the genus Cerithiopsis from 
