350 PROCEEDINGS OF THE ACADEMY OF [May, 



Figs. 2-2e. — Ashmunella walkeri Ferriss. Florida Mts. 



Figs. 3-3c. — Sonorella hachitana flora n. subsp. Florida Mts. 



Figs. i~ib. — Sonorella hachitana (Dall). Station 7. 



Plate VI — Figs. 1-ld. — Oreohelix hachetana n. sp. Cotypes. Station 11. 

 Fig. 2. — 0. h. cadaver n. subp. Type. Station 5. 

 Fig. 3. — Oreohelix ferrissi morticina. Type. Station 5. 

 Figs. 4, 4a, 4c. — Oreohelix ferrissi Pils. Shells denuded of the cuticle and 



cuticular processes. Station 3. 

 Figs. 5-5c. — 0. ferrissi Pils. Cotypes. Station 3. 

 Fig. 5d. — 0. ferrissi Pils. Young specimen, showing the embryonic and 



\\ neanic whorls. Station 3. 

 Fig. 6. — Oreohelix hachetana. Embryonic and part of the first neanic whorls 



of a paratype. Station 11. 



Plate VII — Figs. l-ld.—Holospira bilamellata Dall. Station 5. Topotypes. 

 Figs. 2-25. — H. b. longa n. subsp. Cotype. Station 4. 

 Figs. 3-3c. — H. b. heliophila n. subsp. Cotypes. Station 1. 

 Figs. 4, 4a. — H. b. insolata n. subsp. Cotypes. Station 6. 

 Figs. 5-5c. — H. b. media n. subsp. Cotypes. Station 3. 

 Figs. 6, 6a. — H. b. mearnsi Dall. Station 8. 

 Figs. 7-7c. — H. crossei Dall. Station 11. Topotypes. 



