. The structure and classification of birds . s of the Passerine Birds, i. P. Z. S. 1876, p. 506; Notes on theAnatomy of Passerine Birds, ii. P. Z. S. 1877, p. 447 ; iii. iUd. p. 523; 1878, p. 143. The following papers are due to Fobbes : Gon-tributionsto the Anatomy of Passerine Birds, P. Z. S. 1880-2. N 178 STRUCTURE AND CLASSIFICATION OF BIRDS the group first concern one of the two views that we havereferred to above. The reasons which lead us to agree withGaebod and Forbbss separation of a group Desmodactyh,as opposed to the remaining Passeres, which are to be so-called Ble

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. The structure and classification of birds . s of the Passerine Birds, i. P. Z. S. 1876, p. 506; Notes on theAnatomy of Passerine Birds, ii. P. Z. S. 1877, p. 447 ; iii. iUd. p. 523; 1878, p. 143. The following papers are due to Fobbes : Gon-tributionsto the Anatomy of Passerine Birds, P. Z. S. 1880-2. N 178 STRUCTURE AND CLASSIFICATION OF BIRDS the group first concern one of the two views that we havereferred to above. The reasons which lead us to agree withGaebod and Forbbss separation of a group Desmodactyh,as opposed to the remaining Passeres, which are to be so-called Bleutherodactyli, are as follows: The Menuridss(Pseudoscines of Sclatbe and Fuebeingbe) are clearly insome respects degenerate forms. The clavicle has becomerudimentary, and the muscles of the syrinx, while approach-ing the tjrpical oscinine form, where these muscles arenumerous and strong, have become to some degree weakenedby loss. On the other hand the Eurylsemidae, while they haveretained the typical mesomyodian syrinx—typical, because it.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898