Oropeza, D. L. S., G. San Martín, and V. Solís-Weiss. “The Genus Syllis (Polychaeta: Syllidae: Syllinae) in the Southern Mexican Pacific, With the Description of Two New Species and Three New Records”. Zootaxa, vol. 3263, no. 1, Apr. 2012, pp. 47–62, doi:10.11646/zootaxa.3263.1.2.