184. [April, 



A specimen in the Rivoli collection appears to he this bird. Though much 

 resembling A. caroline7isis, in colors and general appearance, it is smaller, the 

 wings are shorter and the bristles along the bill are simple, not ciliated as in 

 that species, and are, as BufFon says, " tres roides." I may observe, by the way, 

 that although this author expressly describes his bird as having the bill bordered 

 by nine or ten pairs of very stiff " moustaches," he omits them in his plate. 

 (PI. Enl, 735.) 



The specimen alluded to does not accurately agree with Buffon's figure; the 

 bill is longer, and the lateral tail feathers are largely tipped with white, the neck 

 has, moreover, a whitish collar. I suspect that the A. rufus is a South Ameri- 

 can species nearly allied to A. ca-rolinensis. 



13. Antrostomus macromystax. (Wagler.) Isis 1831, p. 533. 



I have attached this name to two specimens from California which are very 

 nearly related to A. vociferus, (Wilson.) They seem to be the bird meant in the 

 description or rather notice by Wagler, as above. 



14. Genus Nyctibius. VieiUot, Analyse, p. 38. 



Obs. This genus is one of the most easily recognized in the circle of the 

 Caprimulgidae, and is another which is exclusively American. 1 have seen the 

 following species : 



1. Nyctibius grandis. (Gm.) Gray's Gen. pi. 16. 



2. Nyctibius izthereus. (De Wied.) Reise, Bras, i, p. 236. 



3. Nyctibius longicmidatus. (Spix.) Av. Bras, ii, pi. 1. 



4. Nyctibius jamaicencis. (Gm.) Gosse, 111. B. of Jam. pi. 6. 



5. Nyctibius leucopterus. (De Wied.) Des Murs, Icon. Orn. pi. 49, 50. 



6. Nyctibius bracteatus. Gould. Proc. Zool. Soc. Lond. 1816, p. 1. 



15. Nyctibius grandis. (Gm.) 



The Wood Owle of Sloane (Nat. Hist. Jamaica ii. p. 295) and the Guira querea 

 of Butfon (Hist. Nat. des Ois. vi. p. 570, Quarto, 1783) appear to be this species. 

 I am not acquainted with any other American species which has the jaws three 

 inches in width, as stated by both the authors cited, nor to which their descrip- 

 tions in other respects can be more properly applied. 



Latham (Gen. Syn. ii. pt. 2, p. 591) gives both those names as synonymes 

 for his " Jamaica Goatsucker," of which he gives a description and figure, upon 

 transferring which to his edition of the Systema Naturae, Gmelin gives the name 

 Caprimulgus jamaicensis, (Syst. Nat. ii. p. 1029,) and also erroneously cites as 

 synonymes the same names as Latham. The figure given by Latham (Gen. Syn. 

 ii. pt. 2, pi. 57) represents the N. jamaicensis, which is a well known species, 

 and that plate seems to have saved Gmelin's name from being a synonyme of the 

 N. grandis, there being little in the description which may not be applied to the 

 latter, except the size. 



16. Nyctibius atkereus, (De Wied.) 



1. Caprimulgus cBthereus described by De Wied in Reise nach Brasilien i. p. 

 236, (1820.) 



2. Caprimvlgus longicaudatus described by Spix in Av. Bras. ii. p. 1, (1825.) 



