1906.] NATURAL SCIENCES OF PHILADELPHIA. 149 
belongs to the same family, and probably Glessula also, but the pallial 
organs of that Indian genus are unknown. The group is not related to 
the Achatinide. 
Cochlicopa lubrica (Miill.). 
Bear Park and Cave creek canyon, Chiricahua mountains, and Fort 
Bowie (Ferriss); Carr canyon, Huachuca mountains (Dr. H. Skin- 
ner); all in Cochise county, Arizona. Drift débris of Pecos river, 
Pecos, New Mexico (CkIl.). 
ZONITIDZ. 
Omphalina extends to the western border of the Austroriparian 
area in Texas. The form taken by us will be discussed in the conclud- 
ing paper on Southwestern mollusks. 
Zonitoides minusoula (Binn.). 
Texas: San Marcos, New Braunfels, near Hondo, Del Rio, Devil’s 
river and Pecos river. Everywhere common in drift débris. The 
specimens all show a tendency to be more widely umbilicate than 
typical Northern minuscula, a large part of them being typical Z. m. 
alachuana (Dall). Those from San Marcos and Comal county are of 
the size of Northern minuscula, but westward the shells reach a decid- 
edly larger size, with the exception of the lot taken at Devil’s river, 
which show but little tendency towards a wide umbilicus. 
In Arizona, Ferriss took specimens of var. alachuana at Bear Park 
and Cave creek canyon, Chiricahua mountains, in the drift of San 
Pedro river at Benson, and in the Huachucas. Like other minutiz, 
these shells are very rare in the Chiricahua and Huachuca mountains. 
Helix mauriniana Orb., from Cuba, which has been put in the 
synonymy of minuscula, seems to be a Thysanophora close to or 
identical with 7’. saxicola (Pfr.), as Arango has already stated. Z. 
minuscula occurs also in Japan. 
Zonitoides minuscula neomexicana Pils and Ckll. 
This form is distinguished by the possession of minute and shallow 
spiral striation. It seems to be of somewhat common occurrence in 
New Mexico, and upon examining a set of seven specimens taken by 
me in Galveston in 1885 I find that they are similarly sculptured. 
They came from under boards in a lumber yard, and it may be that 
they were brought from New Mexico with lumber, though I do not 
know that any lumber was shipped from New Mexico twenty years 
ago. 
