376 REFERENCE TO PLATES, VOL. XXI. 



FIGURE PAGE 



PLATE 19. Carelia, 



1. Carelia turricula High. Proc. Malac. Soc., Lond. . . 103 



2. Carelia variabilis Pse. After Borcherding 107 



3. Carelia paradoxa Pfr. After Borcherding 105 



4, 5, 6. Carelia t. newcombi Pfr. Coll. A. N. S. P 104 



7. Carelia t. obeliscus Rve. Cooke coll 104 



8. Carelia t. obeliscus Rve. Conch. Icon 104 



PLATE 20. Carelia. 

 1-4. Carelia bicolor Jay. Cooke coll 113 



5, 6. Carelia bicolor hyperleuca Pils. Coll. A. N. S. P. 114 



7. Carelia bicolor Jay. Coll. A. N. S. P 113 



8, 9, 10. Carelia bicolor adusta Old. Coll. A. N. S. P. 114 

 11, 12. Carelia adusta minor zonata Borcherding. After 



Borcherding 116 



13, 14. Carelia adusta minor Borcherding. After Bor- 

 cherding 116 



15. Carelia adusta zonata Borcherding. After Borcher- 



ding 116 



16. Carelia bicolor angulata Pse. Coll. A. N. S. P 116 



PLATE 21. Carelia. 



1, 2. Carelia hyattiana Pils. Coll. A. N. S. P 108 



3, 4, 5. Carelia cumingiana Pfr. After Borcherding . . 112 



6, 7. Carelia sinclairi Ancey. After Borcherding .... 117 



8, 13. Carelia rigida Hyatt. Cooke coll , 111 



9, 10. Carelia b. fuliginea Pfr. Conchylien Cabinet. . 115 

 11, 12. Carelia bicolor Jay, teeth and jaw. After Binney. 100 

 13. Carelia rigida Hyatt. Cooke coll Ill 



PLATE 22. Pterodiscus. 



1-3. Pterodiscus alatus Pfr. Newcomb coll 121 



4-6. Pterodiscus a. litus Pils. Coll. A. N. S. P 122 



7-9. Pterodiscus discus Pils. & Van. Coll. A. N. S. P. 123 



PLATE 23. Pterodiscus. 

 1-5. Pterodis'cus wesleyi Sykes. Wahaiwa. Coll. A. N. 



S. P 123 



6-8. Pterodiscus cookei Hyatt & Pils. Cooke coll 127 



9. Pterodiscus wesleyi Sykes. Type. Coll. A. N. S. P. 123 

 10. Pterodiscus wesleyi ewaensis Pils. Coll. A. N. S. P. 125 



PLATE 24. Pterodiscus, Planamastra, Armsia. 

 1, 2. Pterodiscus thaanumi Pils. Type. Coll. A. N. 



S. P. . 125 



