Note 428 — Chapter XXI · PYCNOGONIDA[393]

Cole (Ann. Mag. Nat. Hist. (7), xv., 1905, pp. 405–415) has attempted such a phylogenetic classification, starting with Decolopoda, and leading in two divergent lines, through Nymphon and Pallene to the Pycnogonidae, and through Eurycide and Ammothea to Colossendeis. This hint is in part adopted in the subjoined classification. Bouvier, in his recent Report on the Pycnogons of the French Antarctic Expedition (t. cit.), gives reasons for separating the Decolopodidae and Colossendeidae from all the rest. Loman, in Die Pantopoden der Siboga Expedition, 1908, has recently suggested another, and in many respects novel, classification of the whole group.