li ì:
1i !
i i ’
' ' ■ 1
Pelrocheliclon? tibialis, Cass. Proc. Pliilad. Acad. 1853, p. 370; id. Cat. Ilirund.
Mus. Philad. Acad. p. 6 {1853).
Ificrochelidon tibialis, Sclater, Cat. Amer. B. p. 39 (1802).
Neochelidon tibialis, Sclater, t. c, p. xvi, errata (1862) ; Sel. & Salv. P. Z. S. 186-1,
p. 317; iid. P.Z. S. 1809, p. 598.
Atticora tibialis, Baird, Review Amer. B. p. 807 (1865) ; Gray, Hand-1. B. i. p. 72,
no. 859 (1869) ; Sol. & Salv. Nomencl. Av. Neotr. p. 11 (1873) ; iid. P. Z. S. 1879,
p. 195 ; Salv. & Godm. Biol. Centr.-Amer., Aves, i. p. 231 (1883) ; Tacz. Orn.
Pérou, i. p. 242 (1884) ; Shnrpe, Cat. Birds in Brit. Mus. x. p. 185 (1886).
A . s u b tù s b ru u iie a ; tib iis albis.
Hab. iu Am e ric a c en tra li e t iu p ro v in c iâ C o lom b ian a Am e ricæ m e rid io n a lis usq u e ad P e ru v ian i.
A d u lt. G en e ra l c o lo u r above so o ty b rown, w ith a n oily g re en gloss on th e he ad a n d b a ck , th e rum p and
u p p e r ta il-e o v e rts r a th e r p a le r b rown ; win g -co v e rts a n d q u ills glossy b row u ; ta il s lig h tly forked,
tlie fe a the rs glossy h row u ; lo re s v e lve ty b la ck ; e a r-c o v e rts and sides o f n e ck d a rk b row n , th e
la tte r with a s lig h t g rc enisli gloss lik e th e h e ad ; checks a u d e n tir e u n d e r su rfa c e o f body d a rk
e a r th y b row n , a little d a rk e r o u th e u n d e r w iu g - a n d ta il- c o v e r ts ; tliig h s w h ite ; q u ills d u sk y
b row u below. T o ta l leu g th f - l inche s, cu lm en 0-25, wiu g 3-3, ta il 1 '8 , ta rsu s 0 4 .
A ma le from A n tio q u ia [Salmon), iu th e Sa lv in -G o dm an colle c tion, is m o u ltin g , a u d shows
th a t tlie new fe a th e rs o n tlie h e a d and m a n tle a n d w ings a re d is tin c tly g re en ish b la ck ; th e u n d e r
su rfa c e is also d e ep e r and m o re so o ty b row n ; a n d i t is ev id en t th a t th e pa le co lo ra tio n iu some
specimens is c aused b y th e age a u d ab ra sio n o f th e fc a tlie rs.
Hab. F rom P a n am a to Colombia, e x te n d in g as fa r so u th a s P e ru .
Ï I 1 I S species is e<osily distinguished by its white thighs, which coutrast strongly with its
brown under surface. It was first described by the late !Mr. Cassin as from Brazil, a
localitv wliich has not been confirmed by any subsequent observer, although Messrs.
Salvin and Godman mention that in the Cambridge Museum there is a Swainsonian
specimen said to ho from Brazil. The Sclater coUeetiou also had a skin supposed to he
Brazilian, hut all those records are probably erroneous.
The late Mr. J . MeLeannan procured this Swallow on the line of railway in Bauama,
and subsequently it was met with by Mr. Salmon in Antioquia, brecdiug near Remedios.
A Colombian specimen also exists iu the Bremen Museum. Mr. Wyatt has the lollowing
2 b 2