Dear Doug, Sinum minor (Dall, 1889) certainly is a valid species. Apart from Abbott's Seashells of North America the species it is figured in the Naticidae I card pack of Sally Kaicher: Sally Diana Kaicher (1975) Naticidae I, Card No. 792. The Smithsonian has the Type, USNM 86835, from off Sombrero Key, Cape Florida, 84 fathoms, taken by R/V "Albatross" at stn. 2648, on mud, 7.3 x 5.6 mm. There is also one Paratype USNM 87209, from Yucatan Bank, Gulf of Mexico. An additional Paratype is at Harvard, MCZ 7509, from off Sombrero Island, at 54 fathoms, taken by R/V "Blake", 1878, 5.2 x 7.1 mm In my colletion I have five specimens ranging from 7 to 11 mm which were all dredged off Holetown on the west coast of Barbados, at 500-650 feet. Hope this helps somewhat. Best regards, Michael ****************************************** Dr. Michael Hollmann Goerdelerweg 17 D-37075 Goettingen GERMANY Tel.: (home) (49)-551-22356 Tel.: (work) (49)-551-3899-437 FAX: (work) (49)-551-3899-644 e-mail: [log in to unmask] ****