[270]

Sollas, Ann. Mag. Nat. Hist. (5) ix. 1880, p. 402.

[271]

Bowerbank, and also Vosmaer and Pekelharing, Verh. Ak. Amsterdam (2) vi. 3, 1898.

[272]

J. Coll. Japan, xv. 1901, p. 193.

[273]

Vosmaer and Pekelharing, Verh. Ak. Amsterdam, 1898.

[274]

See Bidder, P. Camb. Soc. vi. 1888, p. 183; Sollas, Challenger Monograph, xxv. 1883, pp. xviii.-xxi.; and Vosmaer and Pekelharing, loc. cit.