INDEX 



Plate illustrations are in bold face 



absconditus, Hinnites, 134 

 abyssorum, Cyclopecten (Delecto- 

 pecten), 39 

 Pecten, 47 



vitreus, 47 

 acanthodes, Pecten, 157 

 acroporicola, Coralichlamys, 66, 67 

 acutus, Cyclopecten, 5, 22, 23, 31, 197 

 adamsi, Hinnites, 134 

 adherens, Mycale, 79 

 adscensionis, Pecten, 138, 139, 140 

 aduncus, Pecten, 138 

 aequaliter auritus, Pecten, 58 

 Aequipecten, 58, 63, 95 



flexuosus, 63 

 Aequipecten (Leptopecten) euterpes, 

 117 



palmeri, 113 

 tumbezensis, 119 

 velero, 114 



biolleyi, 116 

 Aequipecten (Plagioctenium) circular- 

 is, 99 

 (Aequipecten) aequisulcatus, Chlamys, 

 102 



Pecten, 101 

 circularis aequisulcatus, Pecten, 



102 

 gibbus circularis, Pecten, 98, 101 

 latiauratus, Pecten, 108 



monotimeris, Pecten, 112 

 palmeri, Pecten, 113, 119 

 purpuratus, Pecten, 104 

 tumbezensis, Pecten, 119 

 ventricosa, Chlamys, 98 

 aequisulcata, Chlamvs (Argopecten) 



circularis, 96, 98, 100, 243 

 aequisulcatum, Plagioctenium circular- 

 is, 102 

 aequisulcatus, Chlamys (Aequipecten), 

 102 

 Pecten, 100 



(Aequipecten), 101 

 circularis, 102 

 (Chlamys) circularis, 101 

 (Plagioctenium) circularis, 



101, 102 

 ventricosus, 100, 101, 102 

 Plagioctenium circularis, 102 

 aktinos, Pecten, 66 



alaskense, Pecten (Propeamusium), 18 

 (Pseudamusium), 41 

 Polynemamussium, 19 

 Propeamussium, 19, 21 



(Parvamussium), 17, 18, 21, 

 183 



alaskensis, Amusium (Propeamusium), 

 18 



Pecten, 18, 41 



(Propeamusium), 18 

 (Propeamussium), 19 

 (Pseudamusium), 18 

 Propeamusium, 18 

 albida, Chlamys hastata, 72 



islandica, 69, 71, 72, 223 

 albidus, Pecten (Chlamys), 72 

 hastatus, 72 

 hericius, 72 

 hastatus, 72, 73 

 altiplectus, Pecten, 85 

 altiplicatus, Pecten, 85 

 amandi, Chlamys, 68, 81, 83 



Pecten (Chlamys), 83 

 amicum, Semipallium, 122 

 amplicostata, Chlamys (Argopecten) 



irradians, 8, 96 

 Amusium, 124 



caurinum, 146 

 malpelonium, 14 

 thetidis, 15, 16 

 Amusium (Propeamusium), alaskensis, 

 18 



malpelonium, 14 

 Amussium, 16 

 caducum, 9 

 cancellatum, 15, 17 

 dalli, 9, 11, 16 

 jeffreysii, 15, 17 

 lucidum, 10, 11, 13 

 striata, 12, 13 

 meridionale, 12, 13 

 pourtalesianum striatulum, 13 

 sibogai, 9 

 squamigerum, 15 

 torresi, 15, 17 

 andersoni, Pecten (Plagioctenium), 54 

 (Pseudamusium), 54 

 Pseudamusium, 54, 55 

 arces, Pecten, 41, 45 



( Delectopecten ) , 46 

 (Pseudamusium) , 45 

 Pseudamusium, 45 

 Arctinula, 38, 39 

 (Arctinula) groenlandicum, Palliolum, 



54 

 arcuata, Ostrea, 138 

 Argopecten, 93 

 (Argopecten), Chlamys, 8, 93 



circularis, Chlamys, 6, 96, 97, 241 

 aequisulcata, Chlamys, 96, 98, 

 100, 243 

 corymbiata, Chlamys, 96 



[293] 



