260 PROCEEDINGS OF THE ACADEMY OF [Mch., 
distribution. The radula has fewer teeth in a transverse row than in 
the hachitana from the Florida Mountains near Deming, New Mexico; 
but only one radula from each locality has been examined. 
The color and other external features of the foot are as described for 
S. virilis. The internal anatomy was described and figured in my 
paper of 1900, Pl. XXI. The spermatheca in another specimen of 
the same lot was globular, as in other Sonorellas, not ovate with thick- 
ened duct as in the individual figured, which was stuffed with spermato- 
phores. The penis was wrongly described in my former article. I 
did not then open it, and considered its upper portion to be epiphallic. 
When opened (PI. XX, fig. 15) it is found to be a long, thin-walled sack, 
the upper half containing a long, slender, more or less convoluted 
papilla (p.p.). This is a little longer than in the hachitana examined 
from the Florida Mountains. Otherwise the genitalia are practically 
the same in the Florida Mountains and Purtyman’s ranch snails. 
Sonorella hachitana bowiensis n. subsp. Pl. XVIII, figs. 29-32. 
The shell is similar to hachitana but is much smaller, with 44 to 44 
whorls. The supraperipheral band shows on about 24 whorls, above 
the suture on the spire; on the last whorl it has very faint, inconspicu- 
ous pale borders or none. Nospiral lines are present in most specimens, 
butjin two they may be scen very faintly, near the periphery. Seven 
fully adult shells measure: 
Alt. Gf 9.9 | (9.8 SO oo5 ey a arena 
Diam. ipeet 17 17:5 17 eae: a et 
Alt. apert. 82 78 8 Avan ey Mamie fue 5 S)e 
Diam. apert. 9.5 9 0:9. ae mca Bae etme 
Bowie, Cochise county. Types No. 86,497, A. N.S. P., collected by 
James H. Ferriss, 1904. Specimens were also taken by Mr. Ashmun 
at the same place. Mr. Ferriss writes that they were taken “in a 
situation exceedingly favorable for snails.” 
The genitalia (Pl. XX, figs. 10, 11) show externally only slight differ- 
ences from hachitana. The penis and epiphallus are comparatively 
a little longer. Internally, however, the penis differs in having a 
short, obtuse papilla, only about 3 mm. long (Pl. XX, fig. 10), while 
in the forms referable to hachitana the papilla is twice as long, slender 
and tapering. These features, which I have confirmed in a number 
of individuals, indicate a certain amount of racial differentiation which 
may properly be recognized in nomenclature. 
The jaw (Pl. XNIII, fig. 22) has four low, wide, unequal ribs and 
some minor riblets. 
