New record for Gulf of Mexico; United States National Museum of Natural History (USNM) 20834; ID by W. K. Fisher, 1939; one specimen, gut missing.
Added keyword "endemic to Gulf of Mexico"
Pilger, J. F. 2009. Echiura of the Gulf of Mexico, Pp. 797–802 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
Harte Research Institute for Gulf of Mexico Studies. 2016. GulfBase: Resource Database for Gulf of Mexico Research, Education, and Management. Texas A&M University-Corpus Christi. World Wide Web electronic publication. http://www.gulfbase.org, 10-16-2019.