288 PROCEEDINGS OF THE ACADEMY OF [Mch., 



Plate XIX. — Anatomy of Oreohelix. 



Fig. 1. — Oreohelix strigosa, from Pecos, New Mexico. Pallial complex. 



Fig. 2.—0. elrodi (Pils.). 



Fig. 3. — 0. strigosa (Gld.), from Pecos, New Mexico. 



Fig. 4. — 0. chiricahuana Pils. 



Fig. 5. — 0. barbata Pils. 



Fig. 6. — 0. s. huachucana Pils. 



Fig. 7. — O. yavapai Pils. Penis. 



Fig. 8. — O. clappi Ferriss. 



Fig. 9. — O. y. neomexicana Pils. Penis. 



Plate XX [all figures X 2], Fig. 10. — Sonorella hachitana bowiensis Pils. Penis 

 opened to show papilla. Bowie, Arizona. No. 86,497. 



Fig. 11. — S. h. bowiensis Pils. Genitalia of same specimen. 



Fig. 12. — Sonorella hachitana (Dall). Genitalia of individual from Florida 

 Mountains, New Mexico. No. 86,496. The penis-papilla shows 

 faintly through. 



Fig. 13. — Sonorella rowelli (Newc). Penis opened to show papilla. San- 

 ford's, Arizona. No. 83,273. 



Fig. 14. — S. rowelli (Newc). Genitalia of same individual. 



Fig. 15. — Sonorella hachitana ashmuni (Bartsch). Opened penis of a speci- 

 men from Purtyman's ranch, Oak creek, New Mexico. No. 79,409. 



Fig. 16. — Sonorella granulatissima Pils. (^ organs, showing epiphallus and 

 flagellura of one of the tv'pe specimens. Spring Canyon, Huachuca 

 Mountains. 



Fig. 17. — .S. granulatissima Pils. Genitalia of same individual. 



Fig. 18. — S. granulatissima Pils. Opened penis of same individual. 



Fig. 19. — Sonorella virilis circumstriata Pils. Genitalia of No. 87,026. Cave 

 Creek Canyon. 



Fig. 20. — Sonorella rowelli (Newc). Terminal ducts of genitalia of a small 

 form from the Patagonia Mountains, Arizona. No. 83,268. 



Fig. 21. — Sonorella virilis Fi\s. Opened penis of type specimen. Chiricahua 

 Mountains. No. 79,622. 



Fig. 22. — S. virilis Pils. Genitalia of same specimen. 



Plate XXI. — Genitalia of Ashmunella. 



Fig. 23. — Ashmunella duplicidens Vila. X2§. No. 87,024. 

 Fig. 24. — Ashmunella proxima Pils. X2§. No. 86,498. 

 Fig. 25. — Ashmunella esuritor Pils. Exserted penis. 

 Fig. 2Q.— Ashmunella angulata Fih. X2§. No. 87,015. 

 Fig. 27. — Ashmunella metamorphosa Pils. X2. No. 88,885. 

 Fig. 28.— Ashmunella I. anqicpira Piis. X2f. No. 83,269. 

 Fig. 29. — Ashmunella chiriv(thuana Pils. X2. No. 87,021. 

 Fig. ^Q.— Ashmunella esuritor Pils. X22. No. 87,023. 



Plate XXII, Figs. 1, 2, 3. — Oreohelix strigosa, variety from Pecos, New Mexico. 

 1. Central tooth r, with three laterals; 2. Group of marginal teeth at 

 the edge of radwla; 3. Lateral and transitional teeth. 



Fig. 4. — Oreohelix clappi Ferriss. Central and two lateral teeth of a co-type. 



Fig. 5. Oreohelix strigosa huachucana Pils. Group of lateral and transi- 

 tional teeth of a type specimen. 



Fig. 6. — Oreohelix barbata Pils. Central tooth with laterals i-iii, vi and vii 

 of a co-type. 



Fig. 7. — Oreohelix i/avapai Pi\s. Co-type. Group of lateral and transitional 

 teeth, with a central tooth on the extreme right. 



Fig. .8. — Ashmunella metamorphosa Pils. Central with two adjacent lateral 

 teeth of a type specimen. 



Fig. 9. — -Ashmunella angulata Pils. No. 87,015. Group of transitional and 

 marginal teeth. 



Figs. 10, 11. — Ashmnnella chiricahuana (Dall). Group of central and lateral 

 teeth and two groups of marginal teeth of a typical specimen. 



Fig. 12. — Ashmunella levettei angigijra Pils. Conservator^^ Canyon, Hua- 

 chuca Mountains. Half row of teeth, some of tlie marginals omitted. 



