1905.] NATURAL SCIENCES OF PHILADELPHIA. 251 
Type locality, Chiricahua Mountains, southeastern Arizona, in Fly 
Park, 10,000 feet altitude (Fischer); also in Cave Creek Canyon (Fer- 
riss, 1904). The locality ‘‘near Tucson” is also given for specimens 
collected by a Mr. Cox, many years ago. ? Huachuca Mountains, in 
Miller Canyon (see below). 
Dall’s type measured, alt. 7.7, diam. 18 mm.’ Three topotypes of 
the original lot collected by Fischer measure: 
Alt. 9, diam. 18 mm.; whorls 53. 
‘ 8.5, (Biot gee 66 5d. 
Sixteen of the specimens collected by Mr. Ferriss in Cave Creek 
Canyon (PI. 16, figs. 96-100) measure: 
Alt. 10 95 10 9 10 88 85 9.5 
Diam. 20.5 20 19 19 $85: / 99.5 185. 18 
Alt. 9 9 9 ge (S38 82 9 8.5 
Diam. 18 18 18 18 18 18 Lads) (EC5 
The diameter curve from this small series has a strongly marked 
mode at 18 mm. (44% of the whole), with a skew toward the smaller 
diameter. 
There is a considerable variation in the height of the spire, shown 
in the measurements above and in the figures, of which figs. 99 and 100 
represent about the extremes of variation in this respect. 
Two specimens from the head of Miller Canyon, in the Huachucas, 
measure 8.5 x 18.2 mm. and 8x 16mm. The smaller one is an albino, 
greenish-white. ‘These may be referable to A. levettei heterodonta, q. v. 
I have seen no Ashmunellas from Tucson, but no differential char- 
acters have been indicated for the variety varicifera Ancey, from that 
place. Nearly all the specimens from the Chiricahua range have 
varices. 
The genital system (Pl. XXI, fig. 29) is remarkable for the great 
length of the epiphallus, vagina and spermatheca duct. The penis is 
large and well developed. The specimens examined are from Cave 
Creek Canyon, in the Chiricahuas. 
The jaw (Pl. XXIII, fig. 13) is stronger than in most of the species, 
with 8 strong ribs and several weaker ones. 
The radula (Pl. XXII, figs. 10, central and lateral, and 11, groups of 
transitional and marginal teeth) has 16.13.1.13.16 or 16.14.1.14.16 
teeth. The thirteenth to fourteenth or fifteenth teeth are transitional. 
’ This measurement was not to the base of the lip, and hence is less than,in 
the shells from the same lot measured by me. 
