BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 107 



served near marshes on February 17 and 18. On March 8 one was 

 seen from the train near 25 de Mayo, Buenos Aires, and others were 

 noted in the same manner west of the city of Buenos Aires on 

 March 13. 



The immature female taken October 28, when fresh, had the bill, 

 anterior to the cere, black; base of bill, including: the mandibular 

 rami, the skin back as far as the eye and a narrow external rim on 

 the eyelids zinc orano:e ; iris liver brown ; tarsus and toes dull j'^ellow 

 ocher; claws black. The male in adult plumage secured on October 

 31 had the bill mainly black ; cere, bare skin in front of eye, gape, and 

 mandibular rami flame scarlet; iris carmine; tarsus and toes apricot 

 orange; claws black. The adult thus was much brighter in color. 

 The immature female from Uruguay, fully grown, but a bird of the 

 year, has the paler markings in the plumage much darker, more 

 nifescent, than in birds in second-year dress. 



Doctor Oberholser ^^ proposes to replace Rostrhanius of Lesson by 

 Cyniindes Spix ^^ on the ground that Cymindes is a new name at the 

 reference cited, a suggestion, however, that is in error. Spix gave 

 diagnoses for all of the genera that he used without citing the name 

 of the founder, so that Aguila, Polyborus, and Cathartes which pre- 

 cede Cymindes are characterized in the same manner as the name 

 under discussion. On reference to the index to the first volume of 

 Spix, which immediately precedes the text, the genus in question is 

 given as Cymindis^ on page 7, as stated, it stands as Cymindes, while 

 plate 2 is lettered Cymindis Leucopygus. It is obvious, therefore, 

 that Cymindes is simply an emendation (apparently unintentional) 

 of Cymindis Cuvier and as such has no priority over the generic 

 name Rostrhamus for the everglade kite. 



GERANOSPIZA GRACILIS (Temminck) 



Falco gracilis Temsiinck, Nouv. Rec. Planch. Col. Ois., livr. IG, April. 

 1822," pi. 91. (Eastern Brazil.) 



Hellmayr ^® considers gracilis of Temminck a subspecies of Gerano- 

 spiza caerulescens. In the material available the two appear so 

 different, with no indicated intergrades, that this usage is not 

 justified. 



This bird was encountered on two occasions near the ranch at 

 Kilometer 80, west of Puerto Pinasco, Paraguay. On the morning 

 of September 15, 1920, one rested quietly on a post above a pond in 

 one of the corrals, and was killed from the door of the kitchen. 

 On September 20 in a tract of heavy monte one flew into the top of 



sBProc. Biol. Soc. Washington, vol. 35. Mar. 20, 1922, p. 79. 

 *« Av. Spec. Nov. Brasiliam, vol. 1, 1824, p. 7. 

 8'' From Sherborn, Ibis, 1898, p. 488. 

 88 Nov. Zool., vol. 28, May, 1921, p. 177. 



