PETROCHELIDON SWAINSONI, Sdater.
SWAIXSON’S CLIFF-SWALLOW.
Hirundo melmogasler, Swains. Philos. Mag. new scries, i. p. 3C6 (1827) ; Gray,
Gen. B. i. p. 58 (1845).
Petrochelidon melanogoster, Cah. Mus. Ilein. Th. i. p. 47 (1850).
Petrochclidon swainsoui, Sclater, P. Z. S. 1858, p. 290, 1859, p. 376 ; id. Cat. Amer.
B. p. 40 (1802); Baird, Review Amer. B. p. 290 (1805); Salvin, Ibis, 1806,
]). 192 ; Sumiohr, Mem. Bost. Soc. N. II. i. p. 647 (1809); Scl. & Salv. Nomenel.
Av. Neotr. p. 14 (1873) ; Lawr. Bull. U. S. Nat. Mus. no. 4, p. 17 (1876) ; Dughs,
La Nat. i. p. 111 (1878) ; Salvin & Godman, Biol. Ccntr. Amer., Aves, i. p. 227
(1883) ; Sliarpe, Cat. Birds in Brit. Mus. x. p. 194 (1885).
Hirundo coronata, Lieht. Prcis-Verz. Mcx. Vog. p. 2 (1830) ; C.ah. J. f. O. 1863,
p . 6 8 .
Petrochelidon lunifrons (pt.), Coues, B. Color. Vail. p. 426 (1878).
P . fro n te ru f à : urojiygio rufo ; g u ttu r e ru fo : m e n to basali n ig ro : g u ttu r e imo n ig ro n o ta to : hyp o -
clioiiilriis <;ine ra sc e iiti-bninneis .
Hab. iu America c en tra li.
A d u lt male. Gen e ra l colour above g lossy s te e l-b lu e , va ried on th e m a n tle a n d ba ck w itli a sh y -w h itish
stre ak s, with which th e fe a th e rs a re edged ; w ing-cove rts b la ck ish , slig h tly glossed w ith ste e l-
blue ; b a s ta rd -w in g , pvimary-covevts, a nd quills also b la ck ish , with sc arcely any gloss ex c ep t o n tlic
se conda rie s, th e in n e rm o s t o f w in ch have na rrow a sh y -w liitish m a rg in s n e a r tlie e nd o f tb e o u te r
webs ; lowe r back a n d rum p p a le c in n am o n -ru fo n s ; u p p e r ta il-co v e rts brown, with n a rrow b la ck ish
s h a ft-s tre a k s , a n d edged w ith a sh y -w h itish ; c row n o f he ad g lossy s te e l-b lu e , s ep a ra ted from th e
m a n tle by a n a rrow colla r o f deep ch e s tn u t, ex ten d in g from th e e a r-co v c rts and followed by a
le ss d is tin c t colla r o f ashy b rown lik e th e sides o f th e n e ck ; a b ro ad fro n ta l bau d o f deep
c lie s tu n t ; lo re s velvety b la ck, with re d d ish -b u ff bases ; che cks, sides o f face, and e a r-co v e rts deep
c h e s tn u t, as also th e th ro a t ; a line a lo n g th e base o f th e ch in b la c k ; in th e c e n tre o f th e th ro a t
a p a tc h o f blue -b la ck fe a th e rs, n o t very d is tin c t ; sides o f ne ck, h rc a s t, a n d sides o f b o d y pale
a shy b rown, w ith a s lig h t ru fo u s tin g e , th e flanks w ith in d is tin c t d u sk y s h a f t- lin e s ; c e n tre o f
b o d y and abdom en w h ite ; tliig h s a sh y b rown, slig h tly washed with ru fo u s ; v e n t pale ru fo u s ;
u n d e r ta il-c o v e rts asliy b rown tin g ed with ru fo u s ; th e fe a th e rs su b te riu in a lly d a rk b row n a n d
broadly edged with w h itish ; u n d e r w ing-cove rts a n d axilla rie s ashy b rown washed w ith rufous,
especially n e a r th e edge o f th e wing ; q u ills d u ll a shy browu below. T o ta l le n g th 5 '1 inclics,
cu lm en 0 '3 , wing 4 '1 5 , ta il \ '7 b , ta rsu s O' 15.
A d u lt female . S im ila r to tlie male in colour, b u t a trifle sm a lle r. T o ta l le n g th 1'5 inche s, wing I 'l ,
ta il 1 '8 , ta rsu s 0 Jo .