PLATE XXVII. 



Dentalium laqueatum Verrill ; 29.0. Page 426. 



Dcntalium ceratum Dall, very young ; 7.0. Paf^e 424. 



Dentalium carduns Dall ; 16.0. Page 423. 



Dentalium Gouldii Dall, var. obscurum ; 28.0. Page 424. 



Cadulus quadridentatus Dall, and outline of aperture, of vvliich the 



antero-posterior line is across the plate ; 10.0. Page 428. 

 Dentalium perlongum Dall, and outline of aperture, of which the 



antero-posterior line is across the plate ; 80.0. Page 419. 

 CaduliLS amiantus DsiW; 5.75. Page 431. 

 " 8. Cadulus lunula Dall, and outline of aperture, of which the antero- 

 posterior line is across the plate ; 6.0. Page 431. 

 '• 9. Cadulus CRqualis Dall, and outline of aperture, of which the antero- 

 posterior line is across the plate ; 15.0. Page 429. 

 '• 10. Dentalmm callithrix Dall ; 25.0. Page 427. 

 "11. Cadulus acus Dall ; 8.0. Page 432. 

 " 12. Dentalium ensiculits Jeffreys, and outline of aperture, of which the 



antero-posterior line is across the plate ; 20.0. Page 428. 

 '• 12 a. Cadulus Watsoni Dall, and outline of aperture, of which the antero- 

 posterior line is across the plate ; 13. 0. Page 429. 

 *' 12 b. Dentalium callipeplum Dall ; 36.0. Page 419. 



" 12 c. Cadulus Agassizii Dall, and outline of aperture, of which the antero- 

 posterior line is across the plate ; 9.0. Page 430. 

 " 12 d. Cadulus cucurbita Dall, and outline of aperture, of which the antero- 

 posterior line is across the plate; 4.0. Page 431. 



