Length. 
8.00 
8.50 
13.00 
14.00 
10.00 
12.00 
11.00 
12.00 
11.00 
9.00 
TYPES: 
LYMNZIDA OF NORTH AMERICA. DLs 
Breadth. Aperture length. 
5.10 
5.10 
7.60 
9.00 
6.75 
6.50 
6.00 
7.00 
6.50 
6.00 
Location not ascertained ; 
ov or 
oo 
wm wo WW 
Sh t=) 
oO SO 
(Se) 
on 
j=) 
Cotype. 
San Marcos, Texas 
“cc 
“c “ec 
Rockwell Co., Texas. 
Albuquerque, N. M. 
‘ 
Pacifie Grove, Cal. 
ia3 “e “cc 
“e 
Cotypes, Academy of Natural 
Sciences of Philadelphia, five specimens, No. 59604. 
Type LOCALITY: 
ANIMAL, JAW, RADULA and GENITALIA: 
Distribution of 
TECHELLA / 
RANGE (Figure 17): 

% y) 
G@ Ne SAS - fj 
Ve y 
CRY >) 
Ve 
Ww ee \\e 
eet: 
= y M 
fi r 
CE RAS 
\ a 
a ‘ 
Not examined. 
a GT 
Southern United States from Kansas, Mis- 
souri and Colorado to southern Texas; Alabama west to south- 
ern California 
and 
Techella is a race charac- 
teristic of the Lower Mississippian, Rio Grandian and Coloradoan 
regions. Its center of distribution would seem to be the great plains 
region of Texas, where it is abundant and widely distributed. This 
