Syntype: USNM 19561
Type loclaity: southeast of Punta Mala, Azuero Peninsula, Panama, eastern Pacific.
Syntype: USNM 19560
Type locality: South of Coiba Island, Gulf of Chiriqui, Panama, eastern Pacific
Syntype: USNM 19564
Type locality: East of Marchena Island, Galapagos Islands, Ecuador, eastern Pacifc.
Syntype: USNM 19563
Type locality: South of San Cristobal Island, Galapagos Islands, Ecuador, eastern Pacifc.
Two of the syntypes of this species were collected by the R. V. Albatross from the eastern Pacific waters off Panama. USNM 19561 from southeast of Punta Mala (Centroid Latitude: 7.2500, Centroid Longitude:-79.600, depth 1865), Azuero Peninsula, and USNM 19560 from South of Coiba Island (Centroid Latitude: 6.5833, Centroid Longitude: -81.7333, depth 1430 m), Gulf of Chiriqui.