[252] Potonié (05) fig. 4.
[253] Seward and Leslie (08) Pl. X. figs. 1 and 2.
[254] Sternberg (26) A. Pl. XI. figs. 2–4; (02) p. 23.
[255] Corda (45) A. Pls. I.-IV.
[256] Zeiller (92) A.
[257] Kidston (93) p. 561, Pls. I. and II.
[258] Seward (90).
[259] Williamson (93) Pl. IV. figs. 30–32.
[260] Binney (62).
[261] Binney (65); see also Binney (72).