Brit. Mar. Polyzoa, Introduction, p. cxxii.
Ann. Nat. Hist. ser. 5, xx. 1887, p. 91.
Aetea, Eucratea, and certain other forms were separated off by Mr. Busk as a distinct division, the Stolonata.
Most of the writings of this author are referred to on pp. 277, 278 of Miss Jelly's Synonymic Catalogue, referred to on p. [523].
Catalogue of Marine Polyzoa in the Collection of the British Museum, parts i.-iii. 1852-1875; and Challenger Reports, Parts 30 (1884) and 50 (1886).