[None. Paper starts as follows:]
One complete polychaete specimen and two fragments collected by E. F. Ricketts in 1940 from Cape San Lucas, Lower California, are described here as members of a new species. The individuals concerned were taken from the tubes of Spirobranchus incrassatus Mörch, a serpulid polychaete. The new species resembles other polydorids in some characteristics, but is significantly different from all known species; the differences are discussed below.