CHATURA. a7. 
Hirundo pelasgia, Linn. Syst. Nat. i. p. 845°; Wils. Am. Orn, v. p. 48, t. 397. 
Chetura pelasgia, Baird, Birds N. Am. p. 144 (1858)°; Scl. P. Z. S. 1865, p. 610°. 
Saturate murino-brunnea, alis saturatioribus, dorso postico et cauda dilutioribus, vitta superciliari indistincta : 
subtus gutture toto sordide albicante ad pectus murino transeunte: rostro et pedibus nigris. Long. tota 
circa 5:0, alee 5-1, caudee 1:6, (Descr. maris ex Ins. Cozumel, Yucatan. Mus. nostr.) 
© mari similis. 
Hab. Norta America from Labrador and lat. 50° W. southwards 2.—Mexico, Jalapa 
(Boucard®), Cozumel I. (G. FP. Gaumer*); Guatemaa >? 
. This Swift is a well-known summer visitant to the eastern portion of the United 
States, where it breeds, making its nest in the chimneys of buildings or in hollow trees 
in the forest. The nest is described as constructed of sticks firmly stuck together with 
the saliva of the bird, and attached to the brickwork of a chimney or to a tree by the same 
material. Brewer? gives an account of the way in which the bird collects the twigs 
during its flight, and the passage is quoted at length by Dr. Coues®. The former 
author states that the number of eggs laid in each nest is four; the latter gives the 
number as from four to six. | 
Dr. Coues * was unable to find any statement giving the winter-quarters of C. pelagica, 
and we are very much in the same position, though we have ascertained a few spots 
outside the limits of the United States where this bird has been noticed in the winter 
months. It occurs at Jalapa, where M. Boucard met with it, and Mr. Gaumer obtained 
several examples during his stay on the Island of Cozumel+. It also occurs in South- 
eastern Texas, but probably only on passage. In Florida, too, it has been noticed in 
spring, but whence the individuals arrive is unknown, as we have no record of the 
appearance of the bird in any of the West-Indian Islands or on the mainland of South 
America, Practically, therefore, we know next to nothing of the winter-quarters of 
the great mass of birds which must pass and repass in spring and autumn to their 
summer nesting-quarters in the United States, as the few birds noticed in Eastern 
Mexico can only belong to the fringe of the main body of migrants. The occurrence 
of this species in Guatemala rests upon a skin in the British Museum which was 
formerly in Lord Tweeddale’s collection ®. Its locality is not otherwise authenticated. 
4, Chetura vauxi. 
Cypselus vauxi, Towns. Journ. Ac. Phil. viii. p. 148 (1839) *. 
Chetura vauzxi, Baird, Birds N. Am. p. 145, t. 18 (1858) ?; Salv. Ibis, 1861, p. 147°; Scl. P. ZS. 
1865, p. 611°; Baird, Brew., & Ridgw. N. Am. Birds, ii. p. 435°; Sumichrast, Mem. Bost. 
Soc. N. H. 1. p. 562°; La Nat. v. p. 2507; Lawr. Bull. U. S. Nat. Mus. no. 4, p. 32°; 
Ferrari-Perez, Pr. U. S. Nat. Mus. ix. p.158°; Hartert, Cat. Birds Brit. Mus. xvi. p. 481". 
Chetura ?, Scl. & Salv. Ibis, 1860, p. 37. 
Chetura similis, Lawr.””. 
C. pelagice affinis, sed minor dorso postico et tectricibus caude superioribus pallidioribus: subtus omnino 
