INDEX TO POLYPLACOPHORA. 



NOTE. The names of genera and other groups are printed in 

 SMALL CAPITALS ; of species known or supposed to be valid in 

 Roman type ; the names of all synonyms in Italic. 



Abyssorum Sars. xiv, . 18 



Acanthochcetes Auct. xv, . 8 



Acanthochistes Costa, xv, 8 

 ACANTHOCHITES Risso, xv, 7, 8 



ACANTHOCHITID^E Pils. XV, 6 



Acanthochitona Gray, xiv, . 150 



Acanthochiton Herrm. xv, . 8 



ACANTHOPLEURA G U 1 1 d. 



xiv, . . . .213 



Achates Gld. xv, . . 18 



Achatinus Brown, xiv, . 49 



Acrior Cpr. xiv. . . 61 



Aculeatus L. xiv, . .221 



Aculeatus Rve. xiv, . . 219 



Acutiliratus Rv. xiv, . . 65 



Acutirostratus Rv. xv, . 33 



Acutus Cpr. xiv, . . 297 



A^damsii Cpr. xiv, . .111 



Adansoni Roch. xv, . . 13 



Adelaidensis Rv. xiv, .136 



Adenensis Smith, xiv, . 276 



Adriella Thiele, xv, . 62, 63 



JEneus Risso. xv, . . 10 



JSreus Rv. xiv, . .179 



Affinis Issel xiv, . . 181 



AfraRoch.xv, . . 96 



Africana Roch. xiv, . . 181 



Ahnni Roch. xv, . .112 



Alatus Sowb. xiv, . . 60 



Albidus Blv. xv, . . 105 



Albilineatus Rv. xiv, . .160 



Albolineatus Sowb. xiv, . 160 



Albrechti Schr. xiv, . 147 



Albus Barb, xiv, . . 256 



AlbusL. xiv, 70; xv, . 64 



Albus Pult. xiv, . . 4 



Aleutica Dall, xv, . . 65 



Algesirensis Cap. xv, . . 62 



Alphonsinse Roch. xv, . 100 



Alternatus Sowb. xiv, . 281 



Altior Cpr. xv, . . 45 



Altus Gray, xiv, . . 60 



Alveolatum Roch. xv, . 96 



Alveolus Sars xiv, . .6,4 



Amaurochiton Th. xv, . 88 

 Ametrogephyrus Midd. xv, . 52 



Amicorum Baird. xiv, . 249 



AnicuLA'Gray, xv, . . 42 



Amiculatus Pall, xv, . . 46 



Amiculatus Rv. xv, . . 44 



Amiculatus Sowb. xv, . 49 

 AMPHITOMURA Pils. xiv, . 230 



Ampullaceus Pils. xv, . 24 



Anaglyptus Roch. xv, . 97 



Angasi Ad. & Ang. xiv, . 238 



ANGASIA Cpr. xiv, . . 286 



Angulatus Spengl. xv, . 72 

 Angusticostatus Q. & G. 



xiv, ... .187 



Anisochiton Fisch. xiv, . xxi 



Anthochiton Th. xv, . . 88 



Antiquus Rve. xiv, . . 274 



Apicalis Pils. xv, . . 50 



Apiculata Say, xiv, . . 35 



Apparata Cpr. xiv, . . 38 



Aquatilis Rv. xiv, . .169 



Arbutum Rv. xiv, . . 139 



Arcticus Sars, xiv, . . 5 



Arenatus Nutt. xiv, . .295 



Argyrosticta Phil, xiv, . 204 



122 



