1923] NATURAL SCIENCES OF PHILADELPHIA 83 
: 
Otero canyon 
(“7 
WANN 
=x 
ret tL 7 |e 
a BESO 7 
LAS Wie ae 
Vive 
a 
2 
4 
a 
\ Sycamore or 
Brown's canyon 
sau - : 
a & 
Di eh 23 & 
Ati a 
Ke 
oe ae 
ie 
~ 
ro 
Pp. og Old cabin 
ip tle LMEEL ELL 
c 
Be 
Ts 
~Orrogstver Peak i mile 
Fig. 8—Sketch map of a section of the Baboquivari Range, showing 
collecting stations, 1917. 
Specimens from Stations 3, 5-11 are similar. 
In all of these lots dissected (Stations 2, 5, 10) the penis-papilla 
differs from that of typical baboquivariensis by its far more slender 
shape, with a bluntly tapering end, not at all enlarged and glandi- 
form as it is in baboquivariensis. This may indicate that the form 
defined as depressa is specifically distinct; yet as the shell char- 
acters appear to intergrade, we leave this Sycamore canyon form 
as a subspecies. It inhabits the region immediately north of 
baboquivariensis. 
Measurements of the genitalia follow: 
Museum No. 2626.00. |. 147527 Moo M7522 117519 
HCHISEI A Siouoten yc eele es 7 6 S 8 
2c) 01 LO WS ene 3.3 3 2 oo) 
Wipe lhos ss atk ss io 73 6 9 
ileal. Se, eee Nh long a - 1 
MEDERIQIN Atay he Tot 8 6.5 5 at 
EONS LOTT \isict. ye. s § 5 10 2 
LEA ASANE Ui Na ot 2 le a a 7 9 10 5 
In the Sierrita Mountains collections were made at Station 47 
(1917) and 202 (1919), in a canyon facing east, at about 4500 ft., 
and at Station 204 (1919), on the south side of a mountain facing 
Harris ranch, at about 6000 ft. more or less. The shells resemble 
closely those from Sycamore canyon, and the genitalia, particularly 
the form of the slender penis-papilla, are identical with that race, 
in two dissected from Station 202. Length of penis 6.3, papilla 
1.7, epiphallus 8, flagellum 1, vagina 7 mm. 
