136 MR. SCLATER ON THE AMERICAN CAPRIMULGID.E. [Feb. 27, 



Cassin (Cat. Capr.) and Burmeister (Syst. Ueb.) refer "Capr. 

 minutus, Natt.," Bp. Consp. p. 63, to tins species. But Herr von 

 Pelzeln kindly informs me tbat tbere is no such name as thi3 to be 

 found in Natterer's MS., and suggests that it may be a misprint for 

 mixtus. This specific name of Lichtenstein was attached by Nat- 

 terer to his no. 357, which is Antrostomus parvulus. 



Cassin, in his catalogue, refers the present species to Lurocalis ; 

 but its general form, except as regards the tarsi, is much more that 

 of Chordeiles. Spix's specific name is not very applicable, as the 

 rump is not white ; but I suppose he refers to the white mark on 

 the tail-feathers. 



Sect. II. Caprimulginje setirostres. 

 Subsect. A. Aereat : tarsis brevibus, plus minusve vestitis ; rostro 

 plus minusve compresso. 



Genus 4. Antrostomus. 



Of this genus I cannot at present give a detailed account, for want 

 of additional specimens. Nor am I quite satisfied where the line is 

 to be drawn (if it is to be drawn at all) between Antrostomus and 

 Stenopsis, nor as to any real generic difference between both these 

 groups and some of the shorter-winged Caprimulgi of the Old World. 

 Reserving these points for future discussion, I may say a few words 

 about each of the species of this and the following groups which are 

 known to me. 



• The species of Antrostomus may be divided into two sections, as 

 follows : — 



Sect. A. Without any white wing-spot. 



Sect. B. With a white wing-spot on the second, third, and fourth 

 primaries of the male bird. 



I possess examples of nine very distinct species of this genus, be- 

 sides three skins of females or immature birds which at present I do 

 not venture to introduce into the system. 



Sect. A. Speculo alari nullo. 



1. Antrostomus carolinensis. 

 Caprimulffus carolinensis, Gm. S.N. i. p. 1028. 

 Antrostomus carolinensis, Baird, B.N. A. p. 147. 



Hab. South-Atlantic and gulf-states of North America {Baird) ; 

 Cuba (Gundlach) ; Jamaica {March, in litt.) ; Guatemala, Dueiias 

 (Salvin) . 



At once distinguishable by its large size, and by the bristles of the 

 upper mandible being bordered with lateral filaments, which I have 

 not observed in any other species. 



2. Antrostomus rufus. 



Caprimulffus rufus, Bodd. et Gm. (ex PI. Enl. 735). 

 Antrostotnus rufus, Cassin, Pr. Acad. Phil. v. p. 183, et Journ. ii. 

 p. 120. 



A. rutilus, Burm. Syst. Ueb. ii. p. 385. 





