Turricula senticosa. T. reflexo-emarginata, costis reticulatis.
d'Arg. Conch. t. 12. f. O.
Testa gibba, costis sæpius 12 perpendiculari-obliquis, intertextis striis lamellosis transversis ad anastomosases muricatis, unde admodum scabra evadit. Anfractus ventricosi, sæpius x. Color griseus. Apertura ovata, interne striata, emarginata, parum reflexa.
Evidently this was identical with the M. senticosus of the 'Systema.'
M. oleagineus. M. angulis sulcis inæqualibus, labio interiore rugoso, costis alternis.
Gualt. Test. t. 49. f. G. d'Arg. Conch. t. 13. f. M.
Habitus et structura rubeculæ, at octies major, nec vivide pictus, sed colore testaceo fasciis fuscis longitudinalibus. Apertura intus saturate crocea, rugis albis.
Apparently this was the Triton pileare of authors,—not the Mediterranean shell (T. corrugatus) termed M. pileare in the 'Systema.'
M. pileus Helveticus. M. angulis rotundatis, tuberculis conicis, apertura utrinque canaliculata.
d'Arg. Conch, t. 12. f. D. Rumph. t. 28. f. D.