EXPLANATION OF PLATES. 277 



FIGURE. PAQE 



PLATES 15, 16, 17. Ama-strida, anatomy. 

 For explanation see pages 64, 65. 



PLATE 18. Auriculella. 



1-5. Auriculella crassula Smith. Maui. 91818 109 



6,7. Auriculella uniplicata Pse. (jucunda Sm.). Gulick 



coll. 92708 108 



8. Auriculella uniplicata Pease Maunahooma. Bishop 



Mus 108 



9-11. Auriculella uniplicata. 62532 108 



12-14. Auriculella uniplicata. 92750 108 



15, 16. Auriculella uniplicata Pease. West Maui. 92751. 108 



PLATE 19. Auriculella. 



1. Auriculella canalifera Ancey. Bishop Mus 106 



2. Auriculella canalifera Ancey. A. N. S. 91820 .... 106 



3. Auriculella expansa Pse. Maui. 59047 109 



4-6. Auriculella expansa Pse. Bishop Mus 109 



7, 8. Auriculella tenella Anc. Waianae Mts. Bishop Mus. 99 



9, 10. Auriculella westerlundiana Anc. Hawaii. 91811.. Ill 



11. Auriculella westerlundiana Ancey. Hawaii. 59056. Ill 

 12-16. Auriculella lauaiensis Cooke. Lanai. 92753 and 



Bishop Mus 107 



PLATE 20. Anatomy of Achatinellidcr. 



1. Achatinella vulpina. Teeth. Glen Ada. 108082.. 58 



2. Achatinella lorata nobilis. Teeth 58 



3. Partulina dolei. Pallial organs and alimentary tract; 



s. g., salivary gland 57 



4. Partulina dolei. Free muscles ; I. o. r., left ocular re- 



tractor ; 1. t. r., left tentacular retractor ; ph. r., 

 pharyngeal retractor; t. r., foot retractor 59 



5. Carelia turricula. Pallial organs 62 



PLATE 21. Anatomy of Amastridcc. 



1-3. Laminella gravida. Fer. Teeth 63 



4. Amastra spirizona Fer. Teeth 63 



5. Leptachatina labiata Pfr. Teeth 63 



6. Carelia turricula Migh. Teeth 63 



7. Pterodiscus rex Sykes. Teeth 63 



8. Laminella citrina Migh. Marginal teeth 63 



9. 11. Thaanumia fuscula Cooke 63 



10. Leptachatina labiata Pfr. Jaw 62 



