,
HIRUNDO DIMIDIATA
H I R U N D O D I M I D I A T A ,
PEAELT-BEBASTED SWALLOW.
JU ru n d o d im id ia ta , S u n d e v . OE fv . K . V e t.-A k a d . F o r h . 1 8 5 0 , p. 1 07 ; H a r t l , I b is ,
1 8 0 2 , p . 1 4 4 ; L a y a rd , B . S. A f r. p . 56 (1 8 0 7 ) ; id . I b i s , 1 8 0 9 , p. 72 ; G r a y ,
Ha n d -1 . B . i. p . 7 1 , n o . 8 3 2 (1 8 0 9 ) ; S h a rp e , P . Z. S. 1 8 7 0 , p . 3 1 0 ; id . C a t. . « r .
B . p. 4 0 , n o . 4 3 4 (1 8 7 1 ) ; G u r n e y in A n d e rs s . B . D am . L d . p . 52 (1 8 7 2 ) ; A y r e s ,
I b is , 1 8 7 8 , p . 2 8 5 , 1 8 7 9 , p . 2 91 ; S h e lle y , I b is . 1 8 8 2 , p . 2 5 9 ; S h a rp e , e d . L a y a r d ’s
B . S. A f r. p. 3 0 0 (1 8 8 2 ) ; A y r e s , I b is , 1 8 8 4 , p . 2 2 7 ; S h a rp e , C a t. B ird s in B rit.’M u s .
X. p . 11.8 (1 8 8 5 ) ; B o c ag e , J o r n . L isb . vii. p . 230.
U i rm id o s c a p n la r is , C ass. P ro o . P h ila d . A c ad . p i. 12 (1 8 5 0 ) ; id . C a t. H i r u n d . M u s .
P h ila d . A c a d . p . 2 (1853).
U em ie c c ro p s d im id ia ta , J îp . E iv i s t. C o n tem p ., T o rin o , 1 8 5 7 , p . 4 .
U em ic e c ro p s s c a p u la r is , B p . t. c. p . 4.
I l i r u n d o leu co som a (n e c Sw.), G r ill, Zool. A n te c k n . p . 3 0 (1 8 5 8 ).
n . suprà clialybco-nigra, pileo dorsoque concoloribus : abdomiue albo ; secuudariis baud extùs albis.
Hab. in AfricS raeridionali.
Adult. Above purplisli blue ; quills broivnisb black, grey ou the inner web, the innermost of the greater
wing-eoverts white, forming a while spot, wbicli, however, is generally concealed by tho scapn-
laries ; occasionally in very old birds a small white spot also appears on the innermost'socondaries j
tail brownish black, without any spots, glossed on the upper surface with dark blue, with a faint
greenish lustre j entire under surface silky white, having in some specimens a certain woolly
appearance, greyish in certain lights; on each side of the upper part ot the breast a patch o'f
dark blue fcnlbers : " bill and feet black ; iris dark brown ” {Andersson). Total length o'o incbcs,
wiug 4-2, tail 2T), tarsus 0'4.
Young. Not nearly so briglit above, and more distinctly tinged with greenish ; the white spot ou the
greater wmg-coverts either absent altogether, or, when present, of a dull greyish colour and very
little developed.
Hab. South Africa to Maslioona Land on the east and Bengucla on the west.
T u e P c a v ly -b re a sto d Swiillow is v e ry c lo se ly a llie d to JU r u n d o leu c o som a o f 'W e s te ru
A f ric a , b u t o n ly sh ow s a sm a ll w h ite s p o t o n th e i n n e r s c c o iu la ric s in s te a d o f t h e e x te n d e d
w h ite p a tc li o u t h e w in g o f tb o l a t t e r species.
M r . E . L. L a y a i'ti lias g iv e n tlio Ib llow iu g a c c o u n t o f tb e sp e c ie s T b is Sw a llow
is v e ry r a r e iu th e u c ig b b o u rb o o d o f Cap o T ow n , b u t b e c om e s m o re c om m o n o u th e
m a iu la u d . I t w ill b e a s weU to t r e a t th o p e n in s u la b o um lo d b y F a ls e a n d T a b le B a v s