680 MESSRS. SCLATER AND SALVIN ON PERUVIAN BIRDS. [Dec. 1. 



adumbrato et maculis pallide cervinis supra et subtus nigro 

 marginatis ornato : gula et abdomine medio lacteo-albescentibus : 

 lateribus et crisso cum subcaudalibus fere sicut pectus irans- 

 fasciatis : alarum remigibus nigricantibus cervino frequenter 

 transfasciatis, his fasciis in pogonio externo minus distinctis 

 sed apparentibus : rostro elongato incurvo, obscure corneo : 

 pedibus favidis : long, tota 13, alee 7, tarsi 1*9. 

 Hab. Peruvia alta (Jelski et Whitely). 



We have based this new species of our genus Nothoprocta * upon 

 a specimen collected by Jelski at Maraynioc in Central Peru, which 

 M. Taczanowski sent us for examination f, and of which we also 

 take this opportunity of giving a figure (Plate LXXXIV.). 



Mr. "Whitely's two skins from Cchachupata, at first sight appear to 

 belong to two distinct species ; but comparing them with M. Jelski's 

 specimen we find that, though the latter agrees closely with the 

 larger of Mr. Whitely's birds in general coloration, it corresponds in 

 dimensions with the smaller. We are disposed, therefore, to consider 

 the smaller of Mr.»Whitely's two specimens to be in immature plu- 

 mage, the difference of size, chiefly that of the bill, being attributable 

 to individual variation, all three of the birds before us being marked 

 as males. 



This younger bird, if such it really is, differs chiefly in having the 

 breast marked with dark spots with light edges, instead of oval b>ht 

 spots edged on their uppersides with black. The cross bars, too, 

 of the adult birds seen on the chest are absent, and are only slightly 

 shown on the flanks. The general colour of the breast of the young 

 bird is fawn rather than grey. The upper surface is precisely alike 

 in both. 



In our ' Nomenclator,' p. 153, we assigned four species to 



Nothoprocta. To these we now have to add the species described 



above and M. Taczanowski's Nothoprocta branickii (anted,, p. 563). 



The subjoined table may assist in the determination of the species 



of this difficult genus : — 



Prim. est. in pogonio intemo transfasciatis 1 . tac;anovvkii. 



Prim. est. in pogonio interno unicoloribus. 

 Pectore cinereo, albido maculato. 



Secundariis nigro-fuscis, rufo transfasciatis 2. perdicaria. 



Secundariis nigro-fuscis, fasciis fulvis notatis 3. pentlandi. 



Pectore cinereo, indistincte vermiculato. 



Major, tectr. alar, late transfasciatis 4. ornata. 



Minor, tectr. alar, minute fasciatis 5. branickii. 



Pectore rufescente 6. curvirostris. 



* Nomencl. Av. Neotr. p. 156 (1873). t See anted, p. 564. 



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