NDEX TO TECTIBRANCHIATA, 



WITH SPIRAL, EXTERNAL SHELLS. 



Note. — The names of species believed to be valid are printed 

 in Roman type; the names of genera and other groups in Small 

 Capitals ; the names of all synonyms are in Italic type. 



Abbreviata Nev., 

 Abyssicola Braz., 

 Abyssicola Dall, 

 Abyssorum Mori., 

 Acera Auct., 

 Aceras Loc., 

 Acrobeles Wats., 



ACT.EONID.E, 



Adceonidea Gabb, 

 AcTyEONiNA Orb., . 136, 

 AcT^EON Montf. . 136, 



Actceon Oken, 

 AcT^OPYRAMis, Fisch. 

 Adeon Montf., . 

 Acuminata Brug., 

 Acuminata Sow., 

 Acuta Orb., 

 Acuta Ph., 

 Acuta Phil., 

 A damn Braz., 

 Adamsi Cpr., 

 AdamsiiY)^Y., . 

 Adamsii Gray, . 

 Adamsi Mke., . 

 Adansoni Phil., 

 Admirabilis JNIoiI., 

 Adspersa Schr., . 

 JEqui striata, Sm., 

 Affinis Ad., 

 Ahera Gmel., 

 Akera Miill., . 

 Akerid.e Pils., 



407 

 411 

 338 

 397 

 376 

 376 

 201 

 135 

 166 

 172 

 147 

 147 

 167 

 147 

 234 

 259 

 236 

 138 

 405 

 346 

 341 

 364 

 261 

 345 

 333 

 397 

 350 

 369 

 141 

 377 

 376 

 350 



Akerin.e Pils., 

 Alba Br., . 

 Alba Hutt., 

 A Iba Swains, 

 Albocincta Hoev., 

 Alboguttata Sm., 

 Albxis Hutt., 

 Albus Sowb., 

 Algirpe Hani., . 

 Alicula Ad., 

 Alicula Ehr., . 

 Alveola Souv., . 

 Amabilis Wats., 

 Ambigua Ad., . 

 Amboinensis Wals., 

 Amoena Ad., 

 Amphisphyra Lov., 

 Amphizostus Wats. 

 Aniphorella Ad., 

 Amplustra Born., 

 Amplustre L., . 

 Ampula Montf., 

 Ampulla L., 

 Ampu/Ia Orb., . 

 Ampulla Penn., 

 Amygdala Dillw., 

 Amygdala Sowb., 

 Anaspidea, 

 Andersoni Nev., 

 Aiigasi Braz., 

 Angasi Pils., 

 Augusta Gld., . 



26 



351 

 290 

 146 



290 

 388 

 324 

 146 

 152 

 261 

 267 

 265 

 145 

 154 

 371 

 196 

 172 

 280 

 224 

 264 

 388 

 390 

 327 

 343 

 335 

 353 

 329 

 268 

 134 

 260 

 410 

 347 

 361 



427 



29u84 



