[262] Williamson (72).
[263] Weiss, F. E. and Lomax (05).
[264] Binney (62).
[265] Carruthers (69) p. 179.
[266] Kidston (86) A. p. 151.
[267] Seward (06) p. 372.
[268] Hovelacque (92).
[269] Solms-Laubach (92) Pl. II. fig. 6; Seward and Hill (00) Pl. IV. fig. 26. See p. 910 of the latter paper for other references.
[270] Gwynne-Vaughan (08).
[271] Jeffrey (98). See also Tansley (08) p. 37.