332 PEOCEEDINGS OF THE ACADEMY OF [NoV.-DeC, 



Explanation of Plates III to VII. 



Plate III. — Figs, la, lb, 2. — Sonorella odorata n. sp. Station 18 (1917), a gulch 



75 yards east of Alder Spring. No. 119,501. 

 Figs. 3, 3a, 36. — Sonorella odorata n. sp., type. Head of Alder Canyon. 



No. 119,033. 

 Fig. 4. — Sonorella odorata n. sp. Form with narrow umbilicus. Station 18 



(1913), Soldier Camp. No. 119,499. 

 Figs. 5-56. — Sonorella marmorarius limifontis n. subsp., type. Station 17 



(1913), bluffs near Mud Spring. No. 119,500. 

 Figs. 6, 6a, 66. — Sonorella odorata marmoris n. subsp., type. Station 36 



(1913), Old Dan Gulch, northwestern side of Marble Peak. No. 109,075. 

 Figs. 7, 7a. — Sonorella marmorarius imula n. subsp., type. Station 17 



(1917), limestone hill, 6 miles northwest of Brush Corral, in the northern 



foothills. No. 119,503. 

 Figs. 8-86. — Sonorella mormorarius imxda n. subsp. Station 19 (1917), 



same limestone hill. No. 119,502. 

 Figs. 9-96. — Sonorella marmorarius n. sp., t3rpe. Station 26 (1913), Marble 



Peak. No. 109,078. 



Plate IV. — Figs. 1-16. — Sonorella sabinoensis n. sp. Half mile west of camp near 



mouth of Sabino canyon. No. 109,094. 

 Figs. 2-26. — Sonorella sabinoensis n. sp., type. Station 16, mouth of Sabino 



Canyon. No. 109,097. 

 Figs. 3-36. — Sonorella sabinoensis n. sp. Station 16 (1913). No. 119,487. 

 Figs. 4-46. — Sonorella sabinoensis n. sp. Station 9, 2 miles above camp near 



mouth of Sabino Canyon. No. 119,488. 

 Figs. 5, 5a, and 56-5d. Sonorella sabinoensis n. sp. Bear Canyon, Station 



13 (1913). Depressed and elevated individuals. No. 119,490. 

 Figs. 6-66. Sonorella hesterna n. sp., type. Station 148 (1917), Shaw 



ranch, southern foothills of the Rincons. No. 119,489. 



Plate V. — Figs. 1-16. — Sonorella sabinoensis occidentalis n. subsp., type. Sta- 

 tion 36 (1917), south side of Pima Canyon. No. 119,491. 



Figs. 2-26. — Sonorella sabinoensis buehmanensis n. subsp., type. Station 44 

 (1913), Buehman Canyon near Korn Kobb mine. No. 109,198. 



Figs. 3-36. — Sonorella sabinoensis buehmanensis n. sp. Station 43 (1913). 

 Buehman Canyon. No. 119,492. 



Figs. 4-46. — Sonorella tortillita n. sp. Station 41 (1917), east side of Hog 

 Canyon, Tortilhta Mountains. No. 118,053. 



Figs. 5-56. — Sonorella galiurensis, n. sp. Station 30 (1917). Trail IJ^ 

 miles south of Copper Creek mining camp, Galiuro Mountains. Top and 

 face views of type, base of a paratype. No. 119,493. 



Figs. 6-66. — Sonorella galiurensis n. sp. These views of a topotype. No. 

 119,493o. 



Plate VI. — Figs. 1-16. Sonorella ccerulifluminis n. sp., type. Station 18 

 (1914), west side of Blue River 6 miles above mouth. No. 119,048. 

 Figs. 2, 2a, 3, 3a. — Sonorella coendifluminis n. sp. Station 19, Blue River 



at mouth of Pigeon Creek. No. 119,042. 

 Fig. 4. — Sonorella coerulifluminis n. sp. An albino specimen from the same 



station. No. 119,316. 

 Fig. 5. — Sonorella binneyi franciscana n. subsp., type. Station 92 (1913), 



east side of San Francisco River above Sardine Creek. No. 119,052. 

 Figs. 6-66. — Sonorella delicata n. sp. Type. No. 109,110. 

 Figs. 7-76. — Sonorella grahamensis n. sp. Type. No. 109,101. 

 Figs. 8-86. — Micrarionta prossidii n. sp. Type. No. 58,121. 

 Figs. 9-96. — Sonorella rooseveltiana Berry. Type Xl.6. No. 3733 Berry 

 collection. 



