[400]. Mém. Acad. Sci. St-Pétersb. (vii.), xxxviii., 1892.
[401]. Fauna und Flora G. von Neapel, iii. Monogr. 1881, p. 46; see also Loman, J. C. C., Tijdschr. D. Ned. Dierk. Ver. (2), viii., 1907, p. 259.
[402]. The dorsal lobe is absent in Rhynchothorax.
[403]. For a very detailed account of this mechanism, here epitomised in the merest outline, and for an account of its modifications in diverse forms, the student must consult Dohrn’s Monograph (t. cit. pp. 46–53).
[404]. Dohrn, t. cit. p. 55.
[405]. Biol. Stud. Johns Hopkins Univ. v., 1891, p. 49.
[406]. Vergl. Entwickl. d. wirbellosen Tiere, Jena, 1893, p. 664.
[407]. In the second joint in Ascorhynchus abyssi, Sars, and A. tridens, Meinert.
[408]. Biol. Bulletin Woods Holl, vol. ii., Feb. 1901, p. 196.
[409]. Studi e ricerche sui Picnogonidi, Firenze, 1876.