| A - Engina turbinella (Kiener, 1835) | ||
| B - Engina corinnae Crovo, 1971 | ||
| C - Engina annae Watters and Fraussen, 2015 | ||
| A | B | C |
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| A - Honduras | ||
| B - Trawled by commercial scallop boat off the coast of northeast Florida (about 12 mm.) | ||
| C - By SCUBA diver at a depth of 88 feet, 16 miles northeast of Mayport, Duval County, Florida 5/24/06 | ||