Bush, Katharine Jeannette. (1907). Descriptions of the two genera of tubicolous annelids, Paravermilia and Pseudovermilia, with species from Bermuda referable to them. The American Journal of Science. Series 4. 23(134): 131-136.
These two genera, Paravermilia and Pseudovermilia, are most readily recognized by the greater or less development of the thoracic membrane and by the form of the terminal tooth on the uncini. Both have bulbous opercula with horn-colored chitinous caps; both have simple, regularly tapered setae on the thorax, becoming more or less angular and bent on the abdomen; both have somewhat similar shaped uncini.