EXPLANATION OF PLATE III. 41 
both Bulimella and Achatinella in the shady valleys, with Apex on 
the comparatively sunny ridges; and in the third, several abundant 
species of Apex, and but one species of Bulimella, and but one of Acha- 
‘tinella, both of these being extremely rare. 
NOTES ON THE SPECIES. 
Fic. 1. Achatinella zonata (Gk.) S. From Pupukea. 
Fic. 2. Achatinella albescens (Gk.) S. From Pupukea. 
Fic. 3. Achatinella recta (Nwe.) S. From Kawailoa. 
Fic. 4. Achatinella herbacea (Gk.) S. From Kawailoa. 
Fic. 5. Achatinella delta (Gk.) S. From Wahiawa. 
Fic. 6. Achatinella rhodorhaphe (Sm.) SS. From Wahiawa. 
Fic. 7. Achatinella pygmea (Sm.) S$. From Ewa. 
Fic. 8. Achatinella ligata (Sm.) D. From Ewa. 
Fic. 9. Achatinella analoga (Gk.) S. From Halawa. 
Fic. 10. Achatinella colorata (Rv.) S. From Halawa. 
Fic. 11. Achatinella adusta (Rv.) S. From Pauoa. 
Fic. 12. Achatinella castanea (Rv.) SS. From Pauoa. 
Fic. 13. Achatinella olivacea (Rv.) S. From Pauoa. 
Fic. 14. Achatinella dunkeri (Cuming) S. From Makiki. 
Fic. 15. Achatinella producta (Rv.) D >S. From Makiki. 
Fic. 16. Achatinella buddii (Nwe.) S. From Makiki. 
Fic. 17. Achatinella johnsonii (Nwe.) S > D. From Manoa. 
Fic. 18. Achatinella stewartit (Green) D> S. From Manoa. 
Fic. 19. Achatinella fuscozona (Sm.) S. From Manoa. 
Fic. 20. Achatinella trilineata (Gk.) S. From Palolo. 
Fic. 21. Achatinella varia (Gk.) S— D a From Palolo. 
Fic. 22. Achatinella bacca (Rv.) D. From Palolo. 
Fic. 23. Achatinella plumata (Gk.) S. From Waialae. 
Fic. 24. Achatinella diversa (Gk.) S. From Waialae. 
Fic. 25. Achatinella abbreviata (Rv.) D. From Waialae. 
EXPLANATION OF PLATE III. 
The purpose of this plate is to illustrate the variations and inter- 
grading forms of closely related species of the Achatinellide. The 25 
shells figured in this-plate are found in the northwestern portion of the 
island of Oahu, and are regarded as belonging to four species, of which 
Bulimella ovata Nwe. is presented under ten variations, five being of 
the dextral form (see figs. 6 to 10), and five of the sinistral form (see 
figs. 11 to 15). Of these figure ro is found in Hakepuu, and the rest 
in Kahana. Figures 1 to 5 are of Bulimella bulimoides Swn., found in 
Kawailoa; figures 16 to 20 are of Bulimella obliqua Gk., found in 
Kahana; figures 21 to 25 are of Bulimella rosea Swn., of which figures 
21 to 24 are found in Wahiawa, and figure 25 is found in Helemano. 
Intergrading forms are found between figure 5 of this plate and Bulv- 
mella glabra Nwe.; between figure 8 of this plate and Bulimella ojmor- 
pha Gk.; between figure 15 of this plate and Bulimella rotunda Gk. 
