DU BASSIN TERTIAIRE DU PIÉMONT 907 
Typhis horridus Br. 
Fusus longiroster Br. 
Clavella Klypsteini Micht. 
Pleuroploca tarbelliana Grat. 
Dolicholatyrus Valenciennesi Gr. 
Pseudolatyrus fornicatus Bell. 
Fasciolaria spinifera Bell. 
Euthria nodosa Bell. 
—  striata Bell. 
Chrysodomus cinguliferus Jan. 
Latyrus cognatus Bell. 
Ranella marginata Gmel. 
Tritonium Doderleini D'Anc. 
Pleurotoma rotata Br. var. 
— coronata Münst. 
Surcula Lamarcki Bell. 
—  dimidiata Br. var. 
— intermedia Brn. 
— Sismondæ Bell. 
Drillia Scillæ Bell. 
—  Bellardii Desm. 
—  pustulata Br. var. 
Clavatula rugata Bell. 
— turbinata Bell. 
— Coppii Bell. 
— Agassisi Bell. 
— semimarginata Lmk. 
Roualtia subterebralis Bell. 
Aphanitoma labellum Bon. 
Bathytoma cataphracta Br. var. 
Raphitoma hispidula Jan. 
Phos connectens Bell. 
Cyllenina ançillariæformis Grat. 
Peridipsaccus derivatus Bell. 
Janiopsis angulosa Ber 
Nemofusus exacutus Bell. 
Nassa instabilis Bell. 
—  agatensis Bell. 
—  magnicallosa Bell. 
— D'Anconæ Bell. 
—  dertonensis Bell. 
—  gigantula Bon. 
—  megastoma Bell. 
: Baryspira glandiformis Lmk. 
Sparella obsoleta Br. 
Mitra scalarata Bell, 
Mitru Sismondæ Micht. 
—  exornata Bell. 
—  Bronni Micht. 
Uromitra recticostata Bell. 
— cupressina Br. 
Marginella emarginata Bon. 
-- Deshayesi Micht. 
Columbella carinata Bon. 
— scabra Bell. 
Cassidaria echinophora L. 
Natica catena Da Costa var. 
—  epiglottina Lmk. var. 
Neverita Josephinia Risso var. 
Polynices redempta Micht. 
Cyrsotrema scaberrimum Micht. 
Stenorytis globosum De Boury. 
Fusoterebra terebrina Bell. 
Subula modesta Trist. 
Granosolarium millegranum Lmk. 
Ringiculella auriculata Mén. var. 
— gigantula Dod. 
Dendroconus betulinoides Lmk. var. 
— Berg'hausi Micht. 
Conospirus Bronni Micht. 
Chelyconus dertogibbus Sacc. 
Pseudotoma Bonellii Bell. 
Genotia Craverii Bell. 
Solatia Doderleini Mayer. 
Gulia Geslini Bast. 
Scalptia dertoscalata Sacc. 
Bivetia dertonensis Bell. 
Bonellitia Bonellii Bell. 
Calcarata calcarata Bell. var. 
Sveltia lyrata Br: var. 
Cerithium europæum Mayer. 
Ptychocerithium granulinum Bon. 
— obliquistoma Seg. 
Terebralia dertonensis Sacc. 
Thiarapyrenella bicincta Br. 
Pyrenella bisdisjuncta Sacc. 
Lyrcaea narzolina Bon. 
— impressa Krauss. 
Torculoidella varicosa Br. var. 
Haustator vermicularis Br. var. 
— triplicatus Br. var. 
