( 601 ) 



UDderside ot ^' riticfi/s.^' All our five adult birds in the " sjjocfiosfet/i/ig" jdumage 

 are sexed " cJ," and of our three speclmeus in the "citwfu.s" ]ilnraage two are 

 sexed " ?," one " c?." Unfortunately full confidence cannot be placed in the sex- 

 marks put on the labels ; the question must therefore remain open, wliether the 

 adult /'r/«r//<' resembles the male, or the young (" f/«c-^M " plumage). The adult 

 males have the " iris reddish brown, feet bluish grey, bill black, whitish under- 

 neath." The young (Vaud ft'i/iale.s) have the "iris brown, feet bluish grey, bill 

 black, greyish underneath." Wings of the adults 121 — I'i.j, tail 4."), tarsus 3.5, 

 the young (Pj) wing 114 — 118, tail 42 — 43, tarsus 33 mm. 



Before my discovery of the identity of lih. cinctus and spodioxfi-tliiiA, it had 

 already been noticed that these two supposed species agreed in dimensions and 

 « habitat." 



Crax panamensis Grant. 



Crax pfimnnenxts Grant, Cdt. li. Hi-it. Mhk. xxii. p. 480 (1893: "Southern 



Nicaragua and Costa Rica to the U. S. of Colombia." Type not stated : I recognis ■ 



as the type : cJ ad. (skin) Panama, J. McLeaunan coll.). 



c? ad. Paramba, 35(iii ft., (1. x. 1898. "Iris brown, feet light grey-bluish, bill 



whitish." Exactly like the adult mab' of Crax i/lohieera, but traces of white tips 



to the rectrices, therefore belonging to jianamensis or an allied form. Wing 



40ti mm. 



? ad. Paramba 6. x. 1898. " Iris brown, feet flesh-colour, nearly light grey, 



bill whitish." 



? ad. Bulun, 160 ft., 'it), i. 19ol. (Very old, large bare brooding-patch on 



abdomen.) 



These ivio females agree in every detail. The whole back is bright chestnut- 

 rufous, almost dark cinnamon, not washed with black ; there are a few narrow, 



irregular black bars and mottlings to the quills, the abdomen is light cinnamon, 

 the tail deep brown with very wide (1 to 2 cm.) pale cinnamon or buff bars, 

 upper tail-coverts chestnut-rufous with blackish and cinnamon bars. Females from 

 Costa Rica, believed by Mr. Grant to be immature, are very different indeed. The 

 uiqierside is darker chestnut, the wings more speckled with brown-black, the manlle 

 washed with deep black, the tail blackish, crossed by shar]! narrow (4 to 8 mm ) 

 buff, and generally also by chestuut-brown, ill-defined bars. Abdomen darker 

 cinnamon. I do not believe that Mr. Grant's assumption that ih.e%6 females are 

 immature is correct, Imt am inclined to consider them to belong to a distinct form. 

 There are, however, points in favour of Mr. Grant's theory : the males from Costa 

 Rica and W. Ecuador seem to be quite alike ; there is a great deal of variation in 

 moitfemali's of Crax ; younger birds of C. qlobicera are darker than old ones ; there is 

 a specimen from Panama in the British Museum, somewhat intermediate, and there 

 is one from an unknown locality (Zocdogieal Gardens ?) in the Tring Museum, botii 

 somewhat intermediate. Grant's (suj)posed) oMest female is also a ZoologiCiil 

 Gardens specimen, therefore, like most live birds in our Zoological Gardens, without 

 locality. More material is badly needed to un<lerstand the genus Crax, but 

 material from Zoolog'ical Gardens is useless. At present I am inclined to think 

 that there are at least two forms of C. /laname/tsis, one apiiarciitly witliont a nnme, 

 so far. 



