( 89 ) 



These specimens agree well with an adult g from Nauta, N.E. Peru, collected 

 by Ilauxwell. None of them has a yellow streak behind the eye. 



110. Pionites leucogaster xanthomerius (Scl.) 



IPrittacut leucogaster (Illiger MS.) Kuhl, Consp. Psitt. p. 70. [1820.—" Brasilia"]. 

 Caica xanthomeria (G. R. Gray MS.) Solater, P.Z.S. 1857. p. 2C6 (Rio Javari). 



No. 706. c? ad., 24. v. 00. " Iris yellowish red, feet and bill greyish white." — 

 Wing 143; tail 81 mm. 



This bird differs from our series of P. I. leucogaster (Kuhl) of Para by having 

 the flanks and thighs bright yellow (instead of green). The tail feathers are also 

 yellow, except the basal half of the middle pair. A specimen from the Rio Jama 

 in Count Berlepsch's collection has the base of all rectrices green, only the tips 

 being yellow, while in the typical specimens from the Rio Javari the tail is 

 green as in P. I. leucogaster. 



P. I. xanthomerius replaces the latter form on the middle Amazons and its 

 southern tributaries, and is, therefore, more properly called by a trinomial 

 appellation. 



111. Asturina nitida (Lath.) 



Falco nitidus Latham, Ind. Orn. i. p. 41 (1790. — "Cayana"). 



No. 823. ? ad., 14. vi. 06. " Iris brown, feet yellow, bill black." 



Less closely barred with grey on the lower parts than several specimens from 



Surinam. 



112. Rostrhamus sociabilis (Vieill.) 



Herpetoikeres sociabilis Vieillot, Nouv. Diet, xviii. p. 318 (1817. — ex Azara no. 16. — Corrientes, 

 between 27° and 30° south latit.) ; cfr. Hellmayr, Abhandl. a kail. Wissensch. Miinchen 1906, 

 p. 509 note. 



No. 706. ? jnv., 27. v. 00. " Iris dark red, feet yellowish grey, bill black, 

 cere whitish yellow." 



This bird belongs to the long-tailed species with the base of the rectrices, 

 upper and under tail-coverts white. 



Although Azara describes only the young bird, there can be no doubt that 

 the name II. sociabilis refers to this species, this being proved by an adult from 

 Corrientes, coll. D'Orbigny, in the Paris Museum (cfr. my remarks I.e.). 



113. Pisorhina choliba crucigera (Spix). 



[Strix choliba Vieillot, Nouv. Diet. vii. p. 39 (1817.- ex Azara No. 48.— Paraguay).] 

 Strix crucigera Spix, Av. Bras. i. p. 22. tab. ix. (1824.—" juxta flumen Araazonum "). 



No. 743. Adult (not sexed), 2. vi. 06. " Iris brown, feet and bill greyish 

 yellow." 



On the geographical races of this species cfr. my revision of Spix' types) 

 p. 575. 



114. *Porzana hauxwelli Scl. & Salv. 



Porzam hauxwelli Sdater & Salviu, Exotic Ormth. p. 105, tab. liii. (18C8. — Pebas, Peru). 



No. 724. ? ad., 31 v. 06. " Iris dark red, feet reddish yellow, bill black."— 

 Wing 01 ; tail 25 ; tarsus 35J j bill 20 mm. 



