On some Additional Species of Pyrrhura. 667 



Beddard *. In C. celebensis the veutral tract divides much 

 lower down the neck, the pt. capitis is more sparse, the apt. 

 colli lat. is (judging by the figure) more circumscribed, and, 

 most important of all, the pt. spinalis is completely interrupted 

 save for a few scattered feathers at the level of the junc- 

 tion of the coracoid and scapula, thus approximating to 

 the arrangement of the tract in the Stage 3 nestling of 

 C. sinensis. It is impossible to regard the complete spinal 

 tract as anythitig but the more primitive : this condition of 

 the tract is exhibited by the trichoptile-clad embryo and 

 nestling (Stage 2) of C. sinensis, whilst the adult is inter- 

 mediate between them and the insular and more modified 

 species C. celebensis; it would be interesting to see what 

 place in this series would be taken by the young of the latter 

 species. 



EXPLANATION OF PLATE XIII. 



Embryo and Nestling of Centropus sinensis. 



A. Embryo from rigbt side, showing the mane-like trichoptiles described 



on pp. 656-61)6. 



B. Head aud neck of a nestling showing the appearance of the tricho- 



ptiles after hatching, p. 666. 



C. Nestling in which the definitive feathers are making their appearance: 



to show the relations of these with, and their proportions to, the 

 trichoptile. 



u = umbilicus. t = tail. 



XLII. — On some Additional Species of Parrots of the Genus 

 Pyrrhura. By T. Salvadori. 



(Plate XIV.) 



The genus Pyrrhura, as treated in volume xx. of the 'Cata- 

 logue of Birds,^ contains 19 species, besides a doubtful one, 

 Pyrrhura chiripepe (Vieill.), mentioned in the appendix. 

 At the present moment, nearly nine years after the publication 



* " On the Structural Characters and Classification of Cuckoos," 

 P. Z. S. 1885, p. 168. 



