102 PROCEEDINGS OF THE ACADEMY OF [Vol. LX XV 
EXPLANATION OF PiatEs I-VIIL. 
Puate I.—Fig. 1.—Sonorella elizabethae P. & F. Station 276, Canelo Hills, 
Arizona. Type. No. 130991. 
2. Sonorella mustang P. & F. Station 153, Mustang Range. Type. 
No. 130992. 
3, 4. Bulimulus nigromontanus Dall. Station 225, Pina Blanca canyon, 
Arizona. No. 43748. 
5. Sonorella cotis P. & F. Whetstone Range. Type. No. 1380994. 
6. Sonorella cotis P.& F. Station 293, Whetstone Range. No. 130995. 
7. Sonorella patagonica P.& F. Station 260, Patagonia Mts., Arizona. 
No. 438719. 
8. Sonorella patagonica P. & F. Station 254, Patagonia Mts. Type. 
No. 48722. 
9, prone patagonica P. & F. Station 252, Patagonia Mts. No. 
43720. 
11. Sonorella walkeri montana P. & F. Type. No. 48724. 
12. Sonorella linearis P. & F. Type. No. 130996. 
13. Sonorella xanthenes P. & F. Type. No. 118095. 
Puate II—Fig. 1-2.—Sonorella ambigua P. & F. Station 118, Coyote Mts. 
No. 130997. 
2,4. Sonorellaambigua P.& F. Station 120, outlier of Kitt’s Peak. No. 
130998. 
5-7. Sonorella ambigua cyclostoma P. & F. Type (fig. 6) and paratypes. 
No. 118096a. 
8. Sonorella sitiens montezuma P. & F. Type. No. 130583. 
9, 10. Sonorella baboquivariensis P.& F. Bases of two specimens from 
station 5, Sycamore canyon, Baboquivari Mts. 
11. Sonorella baboquivariensis depressa P.& F. Station 58, Tucson Range. 
No. 180999. 
12. Sonorella binneyi imperialis P. & F. Type. No. 131000. 
13. Sonorella berrys P. & F. Type. No. 131001. 
Puate III.—Fig. 1.—Sonorella hinkleyi P. & F. Type. No. 43735. 
2. Sonorella hinkleyi tumacacori P. & F. Type. No. 131002. 
. Sonorella insignis P. & F. Type. No. 44040. 
. Sonorella hinkleyi P. & F. Albino from Station 244. No. 48726. 
. Sonorella cayetanensis P. & F. Type. No. 43737. 
Micrarionta rowelli (Newe.). Enlarged views of specimen from 
Tinajas Altas. No. 187478 U.S. N. M. 
Micrarionta rowelli (Newc.). Type. Natural size and enlarged. 
No. 27517 Cornell Univ. Coll. 
; Hehe BL newcombi P. & F. Type. Enlarged. Cornell Univ. 
oll. 
Puate [V.—Fig. 1—-la.—Sonorella elizabethaeP.& F. No.130577. Station 276, 
Canelo Hills. ; 
2. Sonorella patagonica P. & F. No. 48721. Station 258, Patagonia 
Mts. 
Q N Hore oo 
3. Sonorella cotis P. & F. No. 119038. Station 3 (1914), Whetstone 
4. Soars patagonica P. &.F. No. 43715. Station 253, Mt. Washing- 
5: Sai, mustang P. & F. No. 44048. Station 286, Mustang Mts. 
6. Sonorella patagonica P. & F. No. 43719. Station 260, Patagonia 
ie Sonal patagonica P. & F. No. 48719. Station 260, Patagonia 
s. 
8 
. Sonorella patagonica P. & F. No. 48722. Type. Station 254, 
Washington Mt., Patagonias. 
