1923] NATURAL SCIENCES OF PHILADELPHIA 95 
Height 9.5, diam. 20.5 mm.; 43 whorls. Type. 
op Seo Pay POS ic, ODOLY De. 
cc 10.3 ‘c Di 7 ia 73 
Genitalia (Plate VIII, fig. 1, type) characterized by the long male 
organs. ‘The large penis papilla is ? the length of the penis, with 
a bluntly conic end. The penis is slender basally, enclosed in a 
short sheath. Flagellum very small but distinct. Vagina shorter 
than penis. Lengths of organs as follows: 
Ibetisieite cies 2. . 16.9 mm. Bora lisye sot © aor 24 mm. 
Penis papilla. ......12.0 “ Naciia eae LO 
Penialiretractor.... 8.5 “ Spermatheca and duct 25 “ 
The jaw has 4 or 5 ribs. 
This species is readily known by its depressed shape and coarse 
sculpture. It is not closely related to any described form, but by 
the very large penis and papilla appears to belong to the group of 
S. virilis. 
A very old specimen has a distinctly calloused parietal wall, 
much as in some Oreohelices. 
Oreohelix concentrata huachucana Pils. 
Whetstone Mountains, Stations 286, 303, 304, 3043 (1919). 
The Whetstone form is generally more depressed and more widely 
umbilicate than is usual in the Huachucas, but some Huachucan 
A B C D 
Fig. 11.—Oreohelix concentrata huachucana. Whetstone mountains, 
a, b, c, station 3044; d, station 286. 
examples are entirely similar, and some from the Whetstones are 
elevated. They are always angular or keeledin front or throughout. 
Fully adult specimens measure: 
Height 13.3, diam. 22 mm. Station 286. 
ce 10.3 “ec 18 ce oe ce 
15) / STOR ner ee «303. 
mors. eo dam i “3042, 
“ec 1 ce Da ce ce cc 
