228 HIRUNDINIDE. 
that species. Seeing that the differences between all three birds are definite and that 
each has its own peculiarities as regards migration and its distinct abode, we think 
that to place them together not justifiable. 
Though P. swainsont has been met with by many travellers in Mexico, we have 
nothing recorded of it beyond certain localities where it occurs. Prof. Sumichrast says 
it is peculiar to the plateau of Mexico, and that it rarely occurs elsewhere; still it has 
been found in the State of Oaxaca, and, even by Sumichrast himself, subsequently near the 
city of Tehuantepec, which is situated at but a slight elevation above the Pacific Ocean. 
In Guatemala it only twice came under our observation—once when we found it flying 
over the open land near Duefias, at an elevation of nearly 5000 feet above the sea, and 
again near Godines, above the mountain-lake of Atitlan, as high as 7000 feet. On 
both occasions the birds were flying low, hawking for insects after the manner of their 
kindred. 
3. Petrochelidon fulva. 
Hirundo fulva, Vieill. Ois. Am. Sept. i. p. 62, t. 307. 
Petrochelidon fulva, Scl. Cat. Am. B. p. 40°; Baird, Rev. Am. B. i. p. 291°; Gundl. Orn. Cub. 
p- 82%. . 
Mirundo peciloma, Gosse, B. Jam. p. 64°. 
Petrochelidon peciloma, Baird, Rev. Am. B. i. p. 292°. 
Similis preecedentibus, sed pectore, hypochondriis et crisso rufis distinguenda ; macula quoque pectoralis nigra 
abest. (Descr. exempl. ex Yucatan. Mus. nostr.) 
Hab. Mexico, Northern Yucatan (Gawmer); Panama (MM*Leannan).—ANTILLES, 
Cuba 34, St. Domingo 1, Jamaica 25 8, 
This species, which can be distinguished from both the preceding Swallows by the 
absence of the black pectoral spot and by its fulvous flanks and crissum, was first 
described and figured by Vieillot from specimens obtained in the island of St. 
Domingo. 
It has since been traced to Cuba and Jamaica; for though the bird of the latter 
island was separated by Gosse under the name of Hirundo peciloma®, and its distinct- 
ness recognized by Prof. Baird®, we fail to appreciate any really tangible grounds of 
distinction. 
We now trace this Antillean bird to Yucatan, a specimen obtained there by Mr.Gaumer, 
now in our collection, being absolutely like our Cuban examples. Mr. Gaumer says 
that it is resident in Yucatan, frequenting the cave-like holes called “senotes.” And, 
further, a single specimen, in bad condition, sent us by M‘Leannan from Panama, must 
also be referred to P. fulva, and not to P. pyrrhonota, which has also been found there. 
As M‘Leannan once had in his possession a few Cuban birds which he obtained in ex- 
change, it is just possible that his specimen of P. Sulva may have come from Cuba, and not 
from Panama; but, on the other hand, one of the island birds may have strayed thus far. 
