250 REFERENCE TO PLATES. 



FIGURE. PAGE. 



37, 38. Tethys elongata Pse. Pilsbry, del., 93 



39. Tethys venosa Hutt. Tr. N. Z. Inst., 98 



40, 41. Tethys tigrina Rang. After Rang 108 



42, 43. Tethys norfolkensisSowb. Conch. Icon., 99 



44. Tethys brunnea Hutt. Tr. N. Z. Inst., 97 



PLATE 60. 



45-48. Tethys pan amensisPils. Pilsbry, del., 88- 



49-52. Tethys maculata Rang. After Rang, 107 



53. Tethys argus Riipp. & Leuck. After Riippell, HO 



PLATE 61. 



54. Tethys euchlora Ads. Figs. Moll. Anira., 114 



55. Tethys ocellatus (=adamsi). Figs. Moll. Anim., . . . .114 

 56-58. Notarchus gelatinosa=indicus Schw. After Rang, . 136 



59. Notarchus (Bursatella) leachii Blv. After Blainv., . . .138 



60. Actseon browni Jordan. Proc. Mai. Soc. i, 229- 



PLATE 62. 



1. Notarchus plei Rang, genitalia. E. G. Vanatta, del., . . 62 



2. Notarchus plei Rang, penis. E. G. Vanatta, del., . . . 62 



3. Tethys, " annexed genital mass." After Mazzarelli, ... 63 



4. Notarchus plei Rang, digestive tract. E. G. Vanatta, del. 62 

 5-8. Dolabrifera hollbolli Bergh. After Bergh, 127 



PLATE 63. 



9-11. Dolabella teremidi Rang. After Rang, 154 



12-16. Dolabrifera nicaraguana Pils. Pilsbry, del., .... 124 



PLATE 64. 



1,2. Dolabella guayaquilensis Sowb. Conch. Icon., .... 160 

 3. Dolabella hasselfi (type) Fer. After Rang, 154 



PLATE 65. 



4-6. Dolabella gigas Rang. Ross, del., 152 



7, 8. Dolabrifera triangularis Wats. Chall. Rep., 119 



9. Dolabrifera hollbolli Bgh. After Bergh, 127 



10, 11. Dolabrifera ascifera Rang. After Bergh, 124 



