MUSEUM OF COMPARATIVE ZOOLOGY. 



139 



INDEX. 



Abra longicallis, 133. 



Aclceon Danaida, 96. 



Actfeon fasciatus 1 94. 



Actceon incisus, 95. 



Actceon melampoides, 95. 



Actcnon perforatus, 96. 



Alcadia, 49. 



Amphissa versicolor, 91. 



Amussium luciduni, 117. 



Amussium var. marinoratum, 117. 



Anachis, 91, 92. 



Ancistrosyrinx, 53. 



Ancistrosyrinx elerjans, 54. 



Antalis agilis, 37. 



Area, 120. 



Area aspera, 120. 



Area asperula, 120. 



Area aurita, 118. 



Area glaeialis, 121. 



Area ghviprida, 121. 



Area var. orbiculata, 121. 



Area pectuneuloides, 121, 122. 



Area polycyma, 122. 



Area var. septentrionalis, 121. 



Arene, 53. 



Argiope antillarum, 103. 



Argiope Barrettiana, 103. 



Argiope Sehrammi, 103. 



Astarte, 129. 



Astarte borealis, 130. 



Astarte lunulata, 131. 



Astarte Pfeifferi, 131. 



Astyris ? amphissella, 91. 



Astyris ealifornica, 91. 



Astyris Duelosiana, 91. 



Astyris rosacea, 92. 



Astyris Verrilli, 91. 



Atys ? bathi/inophila, 98. 



Atys ? Sandersoni, 99. 



Avicula sp., 117. 

 Axiuus, 109. 



Basilissa, 48, 51. 

 Basilissa alta, 48. 

 Basilissa costulata, 48. 

 Bathymophila, 44, 102. 

 Bela, 54, 58, 00, 61, 70. 

 Bela Blakfana, 54. 

 Bclu var. extensa, 55. 

 Bela Jilifera, 56. 

 Bela limacina, 55. 

 Bela var. nonnalis, 54. 

 Bela turricula, 59. 

 Bittium, 88. 



Bittium cylindricum, 90. 

 Bittium geniinatum, 90. 

 Bittium mamillanum, 90. 

 Bittium pigrum, 90. 

 Bittium yuedtecunum, 90. 

 Biconia exseria, 39. 

 Buecinum eyaneum, 102. 

 Bulla abyssieola, 97. 

 Bulla earibbsea, 99. 

 Bulla ? eburnea, 98. 



Cadulus cequalis, 34. 

 Cadulus Agassizii, 35. 

 Cadulus eolubridens, 35. 

 Cadulus cueurbitus, 35. 

 Cadulus gracilis, 35. 

 Cadulus lunulus, 35. 

 Cadulus obesus, 35, 36. 

 Cadulus Pandionis, 35. 

 Cadulus sauridens, 35, 36. 

 Cadulus simillimus, 35. 

 Cadulus tumidosus, 35. 

 Cadulus Watson i, 34. 

 Calliostoma annulatum, 45. 



