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Show 1866.] MR. SCLATER ON THE AMERICAN CAPRIMULGIDcE. 135 mens are before one ; but it is not easy to reconcile the conflicting opinions as regards the synonyms of the older authors. Herr von Pelzeln informs me that Natterer's M S . name sapiti, concerning which there has been so much discussion, is undoubtedly referable to this species, having been formerly applied to it in Natterer's catalogue. Natterer subsequently identified this species with Caprimulgus semitorquatus, G m . (PI. Enl. 734) ; but I follow Cassin and Burmeister in considering that the latter synonym must be referred to Lurocalis gouldi. I consider Caprimulgus hirundinaceus, Spix (Av. Bras. ii. pi. 3. f. 1), probably identical with this species. The bill is drawn as if bristled, it is true; but that is also the case in the accompanying figure of Chordeiles leucopygus. 6. CHORDEILES PUSILLUS. Chordeiles pusillus, Gould, P. Z. S. 1861, p. 182. Hab. S.E. Brazil, Lagoa Santa (Lund, in Mus. Hafn.) ; Fazenda and Corunda, Brazil (Natt., no. 605). The diminutive size of this little species, together with the white crissum and chestnut shoulders, render it unmistakeable. My specimens (from Natterer) measure as follows :- Localit. Long, tota, aire, caudae. c?. Fazenda, July 1825 62 5-3 30 ?. Corunda, July 1825 60 5'2 3-0 The remaining species of the subgenus varies greatly from the typical coloration. This is 7. CHORDEILES RUPESTRIS. Caprimulgus mpestris, Spix, Av. Bras. ii. p. 2, pi. 2. % Chordeiles rupestris, Burm. Syst. Ueb. ii. p. 393. c$ . Supra cinereus, fusco variegatus : subtus albus ; pectore cine-rascente, fu-sco vario; ventre fusco maculato : alis nigris, spc-culo alari et secundariis intus albis : caudar rectricibus in po-gonio interno (nisi duar mediar dorso concolores) albis, harum apicibus nigris: long, tota 8'3, alar 6'7, caudce 3'7. 5 . Mari similis, sed magis rufescens et coloribus minus puris. Hab. Rocky Islands of Rio Negro (Spix) ; Lower Ucayali (Bartlett). Subgenus 2. Podochartes. 8. CHORDEILES LEUCOPYGUS. Caprimulgus leucopygus, Spix, Av. Bras. ii. p. 3, pi. 3. f. 2. Chordeiles leucopygus, Burm. Syst. Ueb. ii. p. 393. Lurocalis leucopygus, Cassin, Cat. Capr. Hab. Brazil, vie. of Para (Mus. Berol.) ; banks of the Amazon (Spix) ; Matogrosso, Brazil, Nov. 1826 (Natt., sp. no. 761). Easily known by the want of any white wing-bar, the square white mark on the three outer pairs of rectrices, and its short tarsi, feathered down to the base. |
