134 PROCEEDINGS OF THE ACADEMY OF [Feb., 
Pine Canyon, 7,500 feet; Rustler Park; Long Park, 8,000 feet; “‘ Box”’ 
in Rucker Canyon. 
This species is new to the Chiricahuas. It was originally described 
from the Huachuca range. It was found in some profusion in Long 
Park, many specimens exceeding the type in size, the largest 2.3 mm. 
in diameter. 
It is somewhat remarkable that this form, belonging to a southern 
genus and here at the northern edge of its known range, should be 
found only at high levels. 
Punctum californicum Pils. 
P. californicum Pils., Nautilus, XI, April, 1898, p. 134 (Fish Camp, Fresno 
County, California). 
Head of Cave Creek, Station 14, 8,000 feet; Rustler Park; Long 
Park. Found with Radiodiscus. 
Fig. 28.—Punctum californicum Pils., Rustler Park, Chiricahuas. 
Only seven examples of this atom of life were found, none of them 
as large as the California types, and probably not fully mature. The 
figured example measures alt. .82, diam. 1.35, width of umbilicus .35 
mm., whorls 31. The first 14 whorls are smooth; then very fine 
obliquely radial strize appéar. On the last whorl the striation is dense 
and fine, with thin delicate cuticular lamine on the strie, which give 
fresh shells a satin sheen where the light strikes, the color of the shell 
being light chestnut. Strize at nearly regular intervals are slightly 
more prominent. At the periphery there are about 40 of the more 
prominent strie in 1 mm. The umbilicus is one-fourth the total 
diameter. 
An adult shell of the type lot of P. calijornicum measures 1.8 mm. 
diam., umbilicus .42 mm., therefore, slightly less than one-fourth the 
diameter. The sculpture is similar to that of Chiricahua P. cali- 
jornicum. 
This snail is new to Arizona, having been known hitherto only from 
