1917.] NATURAL SCIENCES OF PHILADELPHIA. 107 
ExpLANATION oF Puates VII, VIII, TX, X. 
Prats VII.—Figs. 1, 1a, 1b.—Ashmunella tetrodon fragilis n. subsp. Type. Sta- 
tion 58. No. 115,753. 
Figs. 2, 2a, 2b—Ashmunella tetrodon animorum n. subsp. Type. Station 
26. No. 115,747. 
ae 3, Sig. 3h.—Ashmunella cockerelli n. sp. Type. Station 19. No. 
115,748. 
Fig. 4.—Depressed specimen of the same lot. 
Fig. 5.—Ashmunella cockerelli argenticola nu. subsp. Type. Station 42. 
No. 115,749. 
Figs. 6, 6a, 6b.—Ashmunella mendax n. sp. Type. Station 16. No. 
115,754. 
Figs. 7, 7a.—Ashmunella cockerelli perobtusa n. subsp. . Type. Station 21. 
No. 115,750. 
Fig. 8.—Ashmunella binneyi n. sp. Type. Station 8}. No. 115,751. 
Fig. 9.—Ashmunella cockerelli n. sp. Enlarged view of type. 
j Fig. 10.—Ashmunella_ mogollonensis Pils. Enlarged view of specimen 
from the Mogollon Range. 
Piare VIII.—Figs. 1-1e.—Oreohelix metcalfet concentrica n. subsp. Type. Sta- 
+ tion 7. No. 115,755. 1d, dark specimen of same from Station 22. 
Figs. 2, 2a.—Oreohelix metcalfei radiata n. subsp. Station 15. 
4 Figs. 3-3c.—Oreohelix metcalfei radiata n. subsp. Type. Station 15. 
} No. 112,899. 
A Figs. 4, 4a.—Oreohelix metcalfei acutidiscus n. subsp. Type. Station 23. 
i No. 115,757. 
: Fig. 5.—Oreohelix metcalfei Ckll. Type. No. 10,941. 
Figs. 6, 6a.—Oreohelix metcalfet radiata n. subsp. Station 16. 
; Figs. 7-7c.—Oreohelix pilsbryi Ferriss. Type. Station 52. No. 112,918a. 
Piate 1X.—Figs. 1-1b.—Oreohelix metcalfet cuchillensis n. subsp. Type. No. 
115,760. 
Fig. 2.—Oreohelix swopet n. sp. Elevated example from Station 45. 
Figs. 3-3b.—Oreohelix swopei n. sp. Type. Station 45. No. 112,896. 
Figs. 4-4b.—Oreohelix metcalfet hermosensis 0. subsp. Type. No. 115,759. 
Figs. 5, 5a, 6, 7.—Oreohelix cooperi (W. G. B.). Station 9. No. 115,280. 
Figs. 8, 8a.—Oreohelix cooperi (W. G. B.). Station 4,. No. 115,156. 
Fig. 9.—Oreohelix cooperi (W. G. B.). Station 26. No. 115,306. 
Fig. 10.—Oreohelix metcalfei concentrica. Embryos. No. 115,315. 
Fig. 11.—Oreohelix metcalfet radiata. Embryos. No. 115,319. 
Fig. 12.—Oreohelix metcalfei hermosensis. Embryos. No. 112,922. 
Fig. 13.—Oreohelix swopet. Embryos. Station 41. 
Puare X.—Fig. 1—Ashmunella mendazx n. sp. Station 16. 
Fig. 2.—Ashmunella cockerelli n. sp. Station 20. 
Fig. 3.—Ashmunella mogollonensis P. and F. 
Fig. 4—Ashmunella cockerelli perobtusa n. subsp. Station 21. 
Fig. 5.—Ashmunella binneyt n. sp. Station 7. 
Fig. 6.—Ashmunella tetrodon P. and F. San Mateo Mountains. No. 112,921. 
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