PETROCHELIDON ARIEL (Gouid).
FAIRY CLIFF-SAVALLOAV.
Collocalia ariel, Gould, P. Z. S. 1842, p. 132 ; id. B. Austral, ii. pl. 15 (1848).
Hirundo ariel. Gray, Gen. B. i. p. 58 (1845) ; id. Cat. Fissir. Brit. Mus. p. 25 (1848) ;
id. Hand-1. B. i. p. 70, no. 818 (18G9).
Chelidon ariel, Gould, B. Austr. Intr. p. xxx (1848) ; Ramsay, Ibis, 1865, pp. 299,
300.
Herse ariel, Bp. Consp. i. p. 340 (1850).
Petrochelidon ariel, Cass. Cat. Hiruud. Mus. Philad. Acad. p. 6 (1853) ; Sharpe, Cat.
Birds in Brit. Mus. x. p. 199 (1885).
Lillia ariel, Boie, J. f. O. 1858, p. 3G4.
Lagenoplastes ariel, Gould, Handb. B. Austr. i. p. 113 (18G5) ; Ratnsay, Ibis, 1868,
p. 275 ; id. Proc. Linn. Soc. N. S. AA'. ii. p. 179 (1878) ; Salvad. Orn. Papuasia e
delle Jlolucche, ii. p. 7 (1881).
Chelidon arborea (nec Gould), Ramsay, Ibis, 1865, p. 299 (lapsu cal.) ; id. Ibis,
1866, p. 127.
P . c ap ite ru fo ; u ro p y g io co uspicue albo ; g u lâ s tr iis n ig r ic a n tib u s an g u s tis s im is u o ta tà .
Hab. in A u s tra lia .
AduU. Gen e ra l e o lo u r above deep b lu e , th e le sse r w ing-cove rts lik e th e b a ck ; r em a in d e r o f tb e wing-
cove rts .and q uills d u sk y , w ith a s lig h t gloss cx te ru a lly ; lowe r ba ck a u d rum p c re am y white ,
slig h tly m o ttled w ith pa le smoky b row u w h e re th e bases to th o fe a th e rs show th ro u g h ; u p p e r
ta il-co v e rts d u ll smoky b row n ; ta il-fe a tlie rs d u sk y b row n , glossed o n th e o u te r web w ith b lu e ;
crown o f h e a d b r ig h t i-ufous, w ith ve ry m iu u te bla ck ish sh a ft-liu c s ; nai>e m o ttle d , th e fe a th e rs
b e in g sp o tted with d a rk b lu e a n d edged w ith ru fo u s j lo re s a u d a lin e above th e eye b la ck ; sides
o f fa c e and e a r-co v e rts d u ll smoky b row n ; cheeks a u d th ro a t w h ite , very m in u te ly sp o tte d with
d u sk y sh a ft-s tre a k s , th e se s tre a k s c o n tin u e d o n to th e fo re uc ck , which is san d y b row u like th e
sides o f th e body a n d flauks ; b re a s t a u d abdom eu p u r e w hite ; u n d e r ta il-c o v e rts w h ite , with a
s lig h t smoky tiu g c ; u n d e r w iug-cove rts a u d axilla rie s d u ll san d y b rowu, th e o u te r cove rts m o ttled
w itii b la ek ish bases ; q uills d u sk y below, lig h te r b rowu a lo n g th e iu u e r webs : “ b ill b la ck isli g re y ;
legs aud f e e t olive-grey ; iris b la ckish b row u ” (7 . Gvuld). T o ta l le n g th -i-6 iuche s, cu lm eu 0-3,
wing 3 '7 , ta il 1-9, ta rsu s 0-4.
The sexes a rc a lik e in plum ag e , a c co rd in g to M r. Gould.
Hab. Confined to th e c o n tin e n t o f A u s tra lia .
In the year 1865, the late Air. Gould instituted the genus Lagenoplastes for tlie ClilF