[542]

I am indebted to Mr. Boulenger for these observations.

[543]

Alcock, Ann. Mag. Nat. Hist. (6), iv. 1889, p. 380.

[544]

Jordan and Evermann, op. cit. p. 76.

[545]

Day, op. cit. p. 336.

[546]

Zittel, op. cit. p. 41.