ta ag Se Pe 
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THE NATURAL HISTORY SURVEY. 179 
Jaw: Arched, ends bluntly rounded; dorsal margin 
rounded, ventral margin with a sharp median projection; ante- 
rior surface striated (Fig. 35, J). 
Radula formula: }3+4+34+1+2+14+11 (14—1—14); cen- 
tral tooth very long and narrow, lower outer corners of base 
of attachment expanded and the lower border with a central 
projection; reflected portion tricuspid, the central cusp rather 
long and narrow, the side cusps almost obsolete, the central 
{NY Ay: 
PiGeoo. 
Teeth and jaw of VITREA DRAPARNALDI Beck. (Original.) c, cen- 
tral tooth; 2, second lateral; 3, third-lateral; 4, first marginal; 10, seventh 
marginal; J, jaw. 
‘cusp only having a cutting point; laterals similar to central but 
wider, tricuspid, the central cusp short and wide, the inner cusp 
the same and the outer cusp, small, placed higher up on the 
reflection, only the central and inner cusp having cutting 
points; the outer cusp of the second lateral is placed higher up 
than on the first lateral, and on the third lateral has disap- 
peared; marginal teeth of the pure aculeate form (Fig. 35). 
There are about 40 rows of teeth. 
Distribution: “Europe, America and Australia (introduced). 
Found in the United States in the greenhouses at Seattle, 
Washington, Oakland and San Francisco, Cal., Chicago, Ill. 
Geological distribution: Pleistocene. 
Habitat: In greenhouses on plants, but more generally 
under or about old boards in damp places. 
Remarks: This species is somewhat new to the snail fauna 
of the United States, and has been found only in California, 
