THE NAUTILUS. 49 
is frequently present, as also a minute angular lamella. All the 
teeth are porcelain-white in color. 
nd 
1-6, VERTIGO MODESTA MICROPHASMA. 7, VERTIGO ALLYNIANA. 
8, V. A. XENOS. 
Length of type 2.6; diameter to lip edge 1.5; length of aper- 
ture 0.9 mm.; whorls 5. 
Type: Cat. No. 2740 of the writer’s collection. Paratypes in 
the Academy of Natural Sciences of Philadelphia, California 
Academy of Sciences, Southwest Museum, United States 
National Museum, and the private collections of Mr. George H. 
Clapp and others. 
