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



Sect. I. Caprimulginj; glabrirostres. 

 Genus 1 . Podager. 

 Podager nacunda. 



Caprimulgus nacunda, Vieill. (ex Azara, sp. 312). 

 Podager nacunda, Schomb. Reise, iii. p. 71 1 ; Burm. Syst. Ueb. ii. 

 p. 400. 



Caprimulgus diurnus, Max. Beitr. iii. p. 326. 

 C. campestris, Licht. Doubl. p. 59 ; Temm. PI. Col. 182. 

 $ . Fuscns, nigra vermiculatus et maculatus, gida, abdomine et 

 caudce apice albis ; primariis nigris, late albo vittatis : long, 

 tota 1T5, alec 8 - 8, caudce 4-3, tarsi 1. 

 $ . Caudce apice concolore. 



Hab. Paraguay (Azara) ; S.E. Brazil (Max. #• Burm.) ; Brit. 

 Guiana (Schomb.) ; Bolivia (Bridges); Lower Ucayali (Bartlett). 

 The egg of this species is described by Burmeister in Cab. Journ. 

 f. Orn. i. p. 170. 



Genus 2. Lurocalis. 



This form is most nearly allied to Chordeiles, but easily distin- 

 guished by its short square tail. The tarsi are short, feathered in 

 front down to the toes, but naked behind. There is no white bar on 

 the wings or tail, but a narrow white throat-band. There are only 

 two known species of this genus, which differ little from each other, 

 except in size. These are — 



1. Lurocalis semitorquatus. 



Caprimulgus semitorquatus, Gm. (ex PI. Enl. 734). 

 Lurocalis semitorquatus, Cassin, Proc. Acad. Phil. v. p. 189. 

 Podager gouldi, Gray & Mitch. Gen. B. pi. 18. 

 Chordeiles semitorquatus, Burm. Syst. Ueb. ii. p. 397. 

 Minor : long, tola 7, alee 6*7, caudce 3. 



Hab. Cayenne (Buff.) ; Cameta, South Brazil (Mus. Berol. teste 

 Burmeister) . 



2. Lurocalis nattereri. 



Caprimulgus nattereri, Temm. PI Col. 107. 



Lurocalis nattereri, Cassin, Proc. Acad. Phil. v. p. 190. 



Chordeiles nattereri, Burm. Syst. Ueb. ii. p. 398. 



Major : long, tota 7'8, alee 7'8, caudce 3*2. 



Hab. S.E. Brazil, near New Freiburg (Burm.). 



A skin of a species of this genus in Mr. Eyton's collection, which 

 for the present 1 am inclined to refer to this species, is much larger 

 than the dimensions above given, measuring, long, tota 9 - 7, alae 8*5, 

 caudse 4. It does not otherwise differ materially from smaller-sized 

 specimens. 



Genus 3. Chordeiles. 



The eight species of this genus which are known to me may be 

 shortly distinguished as follows : — 



