[39] The late Mr. H. M. Ickis, geologist, Bureau of Science, found this species breeding in the Island of Polillo and collected nests and eggs as well as specimens of the bird. [↑]
[40] Some authors prefer Apus Scopoli, 1777, for this genus; Dr. Sharpe uses Cypselus Illiger, 1811. Cf. Hartert, Das Tierreich (1897), 1, 83; Sharpe, Hand-List, (1900), 2, (introduction); Allen, Auk (1901), 18, 121. [↑]
[41] The young in several genera are more or less barred and can not be determined by this key; the females in the genus Eudynamys have the entire plumage barred and spotted. [↑]
[42] The key is modified from that given by Grant, Ibis (1896), 471. [↑]
[43] In Sharpe’s Hand-List, Calayan is given as one of the localities for this species, a slip for Catanduanes; no woodpecker is known from Calayan. [↑]
[44] Cf. references to Clarke under Thriponax hargitti. [↑]
[45] Cf. Grant, Ibis (1896), 473, under Thriponax mindorensis. [↑]
[46] Apart from the characters presented by the tarsal envelope, this division into suborders is fully justified by internal structures, but as these can not be examined in skins they are omitted above.
Key to the suborders of Passeriformes based upon internal characters.
- a1. Intrinsic muscles of the syrinx fixed to the middle of the bronchial semirings, the muscles simple, small, and few. Mesomyodi
- a2. Intrinsic muscles of the syrinx fixed to the ends of the bronchial semirings, the muscles complex and numerous. Acromyodi