I
A‘. M in o r : aid 4 poll. : su b tiis alba, d ilu te fumoso-brunn
eo la v a ta : c au d a minus f u r c a t a ................................2 . caskmiriensis, \i. 1 9 .
h'". J le n tum e t genre ad ba sin nigrre : subtns alba, fumosobrunneo
lav a ta : canda minus f u r c a t a ................................. g. dasijpti.s, ]i, 23.
b " . Supra c auda le s longiorcs albre, reliqure concolores : n ientum
minimò uig ro maculatum : cauda paullò fu rc a ta . . . . ¡agopus, \t. 2 5 .
b'. R e c trix e.xtima iiitu s albo n o t a t a ...................................................................... 5 . albh/cna, p. 29,
A. Siibcaudales n i g n e ..........................................................................................................6. p.~3].
N o spec ie s o f I I o u s e -M a rtiii is fo u n d in th e N ew AVorld, n o r does a n y 's p e c ie s , so f a r as
we k n ow , o c c u r w ith in tb e lim its o f th e A u s t r a li a n R e g io n . I n tb e P a lie a r c tic R e g io n
th e I I o u s e -M a r tin s a r e u n iv e rs a lly d is tr ib u te d , b re e d in g in th e E u r a s ia n S u b -R e g io n
e v e n b e y o n d th e A r c tic C irc le . C. urbica is th e w e s te rn sp ec ie s a n d is re p la c e d in
th e C e n tra l S ib e ria n p ro v in c e a n d th e n c e e a s tw a rd s b y C. lagopus, w h ils t s till f u r th e r to
th e e a s tw a rd s C. d a s y p u s ta k e s its p la c e in tb e J a p a n e s e Is la n d s . O u r in fo rm a tio n as
to th e IIo u s e -M a r tin s in C e n tr a l A s ia a n d th e i r d i s tr ib u tio n se ems to u s to b e s till
im p e rf e c t, b u t e v e n th e w iiite r-r a n g c s o f C. ui'bica a u d C. lagopus a p p e a r to p re s e rv e th e
e a s te rn a n d w e s te rn c h a r a c t e r o f th e i r b r e e d iu g -h a b ita ts . I n th e ca se o f tb o C om m o n
A la r tin , a s h a s b e e u n o te d w ith m a n y o th e r Swallows, th e r e is a te n d e n c y to fo u n d
b re c d in g -c o lo n ie s in o u tly in g d is tr ic ts , as, fo r in s ta n c e , in th o N ilg h iris . O f C. a lbigena
w e s t il l k n ow so l i tt l e t h a t we c a n n o t sp e c u la te u p o n its d is tr ib u tio n . C. ca shm h 'ien s is
is a s o u th e rn fo rm o f C. u i'b ica a n d is c h a r a c te r is tic o f th e m o u n ta in o u s f a u n a in c lu d ed '
in th e H im a lo -C h in e s e S u b -R e g io u ; w h ile C. n ip a le n s is , th e m o s t a b e r r a n t m em b e r
o f t h e g e n u s C h e lid o n , is s t r i c t ly a n in h a b i t a n t o f th e n o r th e r n H im a lo -M a la y a n S ub-
E e g io n .