66 THE NAUTILUS. 
specimens being obtained by Dr. Leighton. The type material 
is from the lower part of the pink loess. The variety does not 
occur (apparently) in the higher or later loess deposits of this 
region. 
Polygyra profunda pleistocenica n. var. 
Shell uniformly smaller than typical profunda, more solid, 
with slightly higher spire and proportionally smaller aperture 
and umbilicus; the color bands are developed in but two speci- 
mens of the 19 specimens examined, the majority of the indi- 
viduals being unicolored. 
Greatest diameter, 22; height, 14.7 mm. Holotype. U. I. 
Now Moly: 
Greatest diameter, 24; height, 14 mm. Paratype. U. I. 
No. P ol BD. 
Greatest diameter, 26; height, 14.7 mm. Paratype. U. I. 
No Pocfai WU. 
This race or variety of profunda is the most common land 
shell in the loess of the vicinity of Alton. The characteristics 
noted above will easily distinguish it from typical profunda. 
This variety recalls Polygyra profunda strontiana Clapp (Ann. 
Carnegie Mus. X, p. 537, pl. xxxii, figs. 18-15, 1916), the 
sizes being about the same in the two forms. In strontiana, 
however, the spire is higher and the shell of different shape. 
Pleistocenica is not common in the lower deposits of the loess 
near Alton nor in the higher deposits. It reaches its greatest 
development near the middle of the pink loess, from which the 
greater number of specimens came. 
From pink loess on cliff of loess, corner Market and East 6th 
Street, Alton, Madison Co., Illinois. 
NOTE ON A PREOCCUPIED GENERIC NAME IN CEPHALOPODS. 
BY S. STILLMAN BERRY, REDLANDS, CALIFORNIA. 
In 1918 (Zool. Anz., Bd. 42, p. 590) I proposed the name 
Acroteuthis as that of a genus of cephalopods having the 
Sepia media Linneus 1767 as type, the said genus being 
