EXPLANATION OF PLATES, XVII. 343 



PLATE 22. 



FIGURE PAGE 



0-52. D. pressum Sh. & P. Pilsbry, del., ' . . . 124 



53-55. D. brevicornu P. & S. Pilsbry, del., . . .125 



6,57. D. insolitum Smith. From Ann. Mag. . . . 109 



58-60. D. platyceras P. & S. Pilsbry, del., . . . 126 



61,62. D. ophiodon Ball. Pilsbry, del., . , . 126 



PLATE 23. 



1. Cadulus quadrischistus Wats. From Chall. Rep., . .148 



2. Siphonodentalium tytthum Wats. From Chall. Rep., . 137 

 3-5. Entalina platamodes Wats. From Chall. Rep., . . 133 



6. Siphonodentalium pusillum Wats. From Chall. Rep., . 140 



7. Cadulus quadridentatus Dall. From Blake Rep., . . 149 

 8-21. S. vitreum (= lobatum). From Sars, . . . 136 



PLATE 24. 



22. Cadulus gracilis Jeffr. From Chall. Rep., . . .165 



23. Cadulus gracilis Jeffr. From P. Z. S., . . . .165 



24. Cadulus gibbus Jeffr. From P. Z. S., . . . . 159 



25. Cadulus amphora Jeffr. From P. Z. S , . . . .161 



26. Cadulus cylindratus Jeffr. From P. Z S., . . .166 

 27,28. Cadulus propinquus Sars. From Sars, .. . . 166 



29, 31, 32. Cadulus subfusiformis Sars. From Sars, . . 163 



30, 33-38. Entalina quinquangularis Forbes. From Sars, . 132 

 39. Cadulus jeffreysi Monts. From Brit. Conch., . . .164 

 40-44. Siphonodentalium lofotense Sars. From Sars, ". .138 

 45-47. Siphonodentalium affine Sars. From Sars, . . . 140 



PLATE 25. 



48. Cadulus sequalis Dall. From Blake Rep., * . 170 



49. Cadulus acus Dall. From Blake Rep., . - .191 



50. Cadulus watsoni Dall. From Blake Rep., : .167 



51. Cadulus vulpidens Wats. From Chall. Rep., .172 



52. Cadulus amiantus Dall. From Blake Rep., .174 



53. Cadulus obesus Wats. From Chall. Rep., .159 



54. Cadulus curcurbita Dall. From Blake Rep., .161 



55. Cadulus lunula Dall. From Blake Rep., .167 



56. Cadulus sauridens Wats. From Chall. Rep., . 173 



57. Cadulus agassizi Dall. From Blake Rep., .168 



58. Cadulus ampullaceus Wats. From Chall. Rep. .158 



59. Cadulus congruens Wats. From Chall. Rep., . 175 



60. Cadulus curtus Wats. From Chall. Rep., ';, .175 



61. Cadulus exiguus Wats. From Chall. Rep., . 159 



62. Cadulus rastridens Wats. From Chall. Rep., .174 



63. Cadulus pandionis Verr. From Tr. Conn. Acad., . 171 



