PASSERES. 3 



and com])Ioxity. Palate segithognathous. Sternum of one particular 

 mould, single-notched. Carotid single (sinistra). Nature highly 

 altricial and psilopajdic." 



" As remarked by Sundovall, exceptions to the diagnostic per- 

 tinence of these two characters of hind claw and wing-coverts are 

 scarcely found. For, in such non-Passerine birds as liaptores and 

 some Herodionex, in which the claw is enlarged, the wing-coverts 

 are otherwise disposed ; and similarly when, as in many Fici and 

 elsewhere, the coverts are of a Passerine character, the feet are 

 highly diverse." {Cf. Coues, in Baird, Brewer, and Ridgway's 

 ' North-American Birds,' p. xv.) 



Division I. ACROMYODI. 



Subdivision I. PASSERES NORMALES. 



Cf. Garrod, P. Z. S. 1876, p. 518. 



Section A. TURLIFORMES. 



(TYPICAL OR THRUSH-LIKE PASSERES.) 



Wing with ten primaries, the first more or less markedly reduced 

 in size. 

 Cf. WaUace, Ibis, 1874, p. 409. 



Synopsis of Groups. 



a. Angle of chin produced very far forwards, 



so as to extend beyond the line of the 



anterior margin of the nasal suture .... COLIOMORPH.SI. 



b. Angle of the chin reaching as far as the 



line of the anterior margin of the nasal 



sutiire, but not beyond it. 

 a'. Tongue not extensile. 



a". Bin notched near the tip of the upper 



mandible CICHLOMORPH^. 



b". BiU entire, not notched CERTHIOMOEPH^. 



b'. Tongue extensile CINNYRIMORPH^. 



