1 8 3 4 , ▁is ▁nom en cl atur ally ▁invalid , ▁it ▁is ▁listed ▁under ▁its ▁replacement ▁name , ▁Bu cc in um ▁/ ▁N ass arius ▁cr ass ius cul us . ▁ ▁Description ▁The ▁thick ▁shell ▁is ▁ov ate , ▁con ical , ▁sh ining ▁and ▁smooth . ▁Its ▁ground ▁color ▁is ▁wh it ish , ▁orn ament ed ▁with ▁numerous ▁und ulated ▁and ▁re dd ish ▁longitud inal ▁lines . ▁The ▁sp ire ▁composed ▁of ▁eight ▁or ▁nine ▁convex ▁wh or ls . ▁The ▁upper ▁ones ▁are ▁pla ited , ▁and ▁the ▁others ▁marked ▁at ▁their ▁upper ▁part ▁with ▁white ▁and ▁brown ▁sp ots ▁or ▁bl ot ches , ▁altern ately ▁dis posed , ▁and ▁surrounding ▁the ▁s uture . ▁A ▁band ▁a ▁little ▁deeper ▁colored ▁covers ▁the ▁body ▁of ▁the ▁body ▁wh or l , ▁the ▁base ▁of ▁which ▁is ▁furn ished ▁with ▁pretty ▁distinct ▁trans verse ▁st ria e ▁or ▁fur rows , ▁five ▁or ▁six ▁in ▁number . ▁The ▁white ▁a pert ure ▁is ▁ov ate , ▁terminated ▁above ▁by ▁a ▁sort ▁of ▁canal , ▁indicated ▁by ▁a ▁trans verse ▁r idge ▁upon ▁the ▁left ▁lip . ▁The ▁outer ▁lip ▁is ▁thick , ▁slightly ▁d entic ulated ▁towards ▁the ▁base , ▁and ▁deeply ▁stri ated ▁within . ▁The ▁col um ella ▁is ▁ar cu ated , ▁the ▁base ▁spir ally ▁fol ded . ▁The ▁left ▁lip ▁covers ▁it , ▁extends ▁slightly ▁upon ▁the ▁body ▁of ▁the ▁shell , ▁and ▁forms ▁a ▁small , ▁project ing