27 
order to secure their prey. Like the typical Caprimulgi , they rest 
on the ground during the day. In every instance in which the site 
employed for incubation has been discovered, a single egg only has 
been found ; it is deposited on the bare ground, and differs from 
those of the other Caprimulgi in being much more round in form, 
and of a dull olive-green spotted with jet black. 
The members of this genus are very nearly allied to the Lyn- 
corni , a group of birds inhabiting the Indian Islands. 
46. Eurostopodus albogularis Vol. II. PI. 7. 
47. Eurostopodus guttatus Vol. II. PI. 8. 
FichteVs Goatsucker , Lath. Gen. Hist., vol. vii. p. 345. 
Genus Caprimulgus. 
Europe, Asia and Africa are the great strongholds of the members 
of this genus as at present restricted. A single species only has yet 
been discovered in Australia, where it frequents the northern or 
intertropical parts of the country. 
48. Caprimulgus macrurus, Horsf. Vol. II. PI. 9. 
This bird is found in Java, and I believe in southern India. 
Family HIRUNDINIDH5. 
Genus Acanthylis. 
A group of birds possessing enormous powers of flight, and the 
members of which are distributed over the Indian Islands and Asia ; 
the form is also found in Africa and in America, but in those coun- 
tries the species are fewer in number : one species only has yet 
been discovered in Australia. 
49. Acanthylis caudacuta Vol. II. PI. 10. 
A migratory bird in most parts of Australia, but whence it comes 
or whither it goes has not yet been ascertained ; of its nidification 
also nothing is known. 
I have alluded to the great wing-powers of the birds of the genus 
Acanthylis , and in illustration I may mention that an individual of 
this species was killed in England during the past year: it would be 
interesting to know the route pursued by the bird in travelling from 
so great a distance as it must have done. 
Genus Cypselus. 
Of this genus, as of Acanthylis , there is but one species peculiar 
to Australia : other members of the group inhabit the continents of 
Europe, Asia and Africa, but not America. 
50. Cypselus Australis, Gould Vol. II. PL 11. 
Hirundo pacifica. Lath.? 
Genus Atticora. 
The members of this genus are principally American. 
