Prionospio delta Hartman, 1965: 151.
Prionospio (Minuspio) delta.— Maciolek, 1985: 376.— Granados-Barba & Solís-Weiss, 1998: 115.
Type locality. Surinam, (07° 52´N, 54 ° 35´W to 07° 55´N, 54 ° 35´W), 520– 550 m.
Type material. Holotype (AHF Poly 0615), paratypes (AHF Poly 0 616, USNM 67693, 67694, 67695).
Records. Mexico: Tabasco and Campeche (Granados-Barba & Solís-Weiss 1998). Surinam, 520–550 m (Maciolek 1985).
Remarks. Maciolek (1985) described Minuspio delta as a species with wide distribution: northeast South America; West Africa; Delaware; Oregon; Gulf of California; 520–2200 m. Maciolek (1985) in her revision of Prionospio synonymized part of the M. cirrifera of Foster (1971 a) with P. (Minuspio) delta and also synonymized P. longibranchiata Reish, 1968 with M. delta. We believe that the specimens recorded from the Grand Caribbean as M. delta will be found to represent an additional species if this group of species is reviewed based on material from world-wide localities.