- Derilissus nanus Briggs, 1969
Holotype: UF 15932. Paratypes: UF 13372 (to be 4, now 8, 1 c&s), 13373 (1) [specimens evidently not sent to USNM, BMNH, ANSP, and SU.] Four types from UF 13372 were to have been distributed to BMNH, ANSP, and SU but that was not done.
Type locality: Bahamas, Off West Plana Cay, depth 48-51 meters.