1918.] NATURAL SCIENCES OF PHILADELPHIA. 333 



Plate VII.— Fig. 1.— Station 58 (1913), Oreohelix cooperi (W. G. B.). Gosper's 



pasture, rim of Blue Mountains. No. 109,173. 

 Figs. 2-26. — 0. cooperi. Station 29 (1914), west side Blue River, 1 mile 



above Blue River Ranger Station, Arizona. No. 119,178. 

 Figs. 3, 3a. — 0. cooperi. Station 27, near preceding station. No. 119,179. 

 Fig. 4. — 0. cooperi. Station 32, east side Blue River, N. M. No. 119,497. 

 Figs. 5-56.— O. cooperi. Station 23, east side Blue River. No. 2. 

 Figs. 5-56. — O. cooperi. Station 23, east side Blue River, 2 miles below 



mouth of Grant Creek, Arizona. No. 119,150. 

 Figs. 6, 6a. 0. cooperi. Station 42^2, Bursam Road, head of Silver Creek, 



MogoUon Mts., 8,000 ft. No. 119,498. 

 Fig. 7. — 0. cooperi apache n. subsp., type. Station 76 (1913), Black River, 



2 miles above Fish Creek. No. 109,184. 

 Figs. 8, 8a. — 0. cooperi apache. Station 53 (1914). Black River. No. 



109,183. 

 Fig. 9. — Oreohelix strigosa meridionalis n. subsp., type. Y Salt House Fork 



of Eagle Creek. No. 109,186. 



