; HIRUNDIN^. 73 
I one in Ireland, this species not migrating regularly so far 
I northward as Britain. Common in the south of Europe. 
I Alpine Swift. 
' Hirundo Melba, Linn. Syst. Nat. i. 345. — Cypselus alpinus, 
j Temm. Man. d’Ornith. i. 433. — Cypselus Melba, White-bel- 
lied Swift, MacGillivray, Brit. Birds, iii. 611. 
32. Cypselus murarius. Black Swift. 
ji Blackish-brown, slightly glossed with green ; throat grey- 
|| ish-white ; length about seven and a half inches. 
Male, 16i, 7, J, and |, and and Female, 
I 
i Arrives in the beginning of May, and departs in the end of 
August. Generally dispersed in Britain and Ireland. Resorts 
to steeples, towers, ruinous castles, and abrupt rocks, where 
it nestles in holes or crevices. The nest is rudely constructed 
of straws, fibrous roots, moss, wool, hair, and feathers, agglu- 
tinated. The eggs, two or three, are pure white, of an elon- 
gated form, an inch in length, seven and a half-twelfths in 
breadth. 
Black Martin. Swift. Screech. Beveling. 
Hirundo Apus, Linn. Syst. Nat. i. 344. — Cypselus mura- 
rius, Temm. Man. d’Ornith. i. 434. — Cypselus murarius, Black 
Swift, MacGillivray, Brit. Birds, iii. 614, 
FAMILY V. HIEUNBINiE. HIEUNDINE 
BIEDS, OE SWALLOWS. 
Body moderately short, rather compressed ; neck very 
short ; head broad, depressed. Bill very short, much 
depressed, opening to beneath the fore part of the eye ; 
upper mandible with the dorsal line slightly convex, the 
edges with a slight notch close to the slender tip ; lower 
mandible with the angle very wide, the dorsal line nearly 
straight, the tip narrow, but rather obtuse ; gape-line 
nearly straight. Palate flat ; tongue short, triangular, 
sagittate and papillate at the base, with the tip bifid ; 
oesophagus wide at the commencement, then narrow ; 
stomach broadly elliptical, with the muscular coat thick, 
forming two moderate lateral muscles, the cuticular lining 
thin, dense, broadly rugous ; intestine short, rather wide ; 
