102 



HIRTJNDINIBiE. 



spring. It seems certain that after breeding this tinge is lost and 

 tlie plumage becomes more or less abraded, the chest fades to smokj'- 

 brown in colour, and the throat, breast, and under tail-coverts are 

 purer white. The rump, which in breeding birds is strongly suf- 

 fused with rufous, also becomes gradually bleached, and fades to a 

 dull whitish or pale smoky brown. 



The size of the present species appears to vary to an unusual 

 extent for a Swallow — the wing in adults ranging from 4 to 

 4"i35 inches, a remarkable difference for so small a bird. 



The Aru-Island specimens are identical with the Australian. 



Hah. Australia; occasionally visiting Jv'ew Zealand. N^ew Britain, 

 New Guinea, Aru Islands, Ke Islands. 



a, b, c. Ad. sk. 



d. Ad.sk. 



e. Ad. sk. 

 /. Ad. sk. 

 (f. Juv. sk. 

 h. Juv. sk. 



i, k. Ad. St. 

 I. Ad. sk. 

 m. Imm. sk. 

 V, o. Ad. sk. 

 p. 2 ad. sk. 

 g. 2 ad. sk. 



r, s, t. Ad. sk. 

 u, V, w. Ad. sk. 



.r. c? juv- sk. 



y. 2 ad. sk. 

 z. (S ad. sk. 

 «'. c? juv. sk. 



Tasmania. 



Tasmania. 



Australia. 



Australia. 



[Australia.] 



Australia. 



S. Australia. 



S. Australia. 



Melbourne. 



New South Wales. 



Liverpool Plains. 



Dismore, Richmond 

 River, Dec. 10, 1880. 



Moreton Bay. 



Queensland 

 (Cockerell). 



Port MoUe, Queens- 

 land (Coiipinger). 



Aru Islands. 



Aru Islands. 



Dohbo, Aru Islands. 



Ronald Gunn, Esq. [P.]. 



Gould Collection. 



W. S. Macleav, Esq. [P.]. 



R. Butler, Esq. [P.]. 



R. B. Sharpe, Esq. 



Linnean Society. (Type of 



H. pyrrhonota.') 

 Sir George Grey [P.]. 

 .7. Fortnum, Esq. [Pi^]. 

 Gould Collection. 

 Gould Collection. 

 Gould Collection. 

 ]Mr. A. P. Goodwm [C.]. 



Gould Collection. 



F. D. Godman and 0. Salvin, 



Esqrs. [P.]. 

 Voy. H.M.S. 'Alert.' 



A. R. Wallace, Esq. [0.1. 

 A. R. Wallace, Esq. [C.]. 

 Voy. H.M.S. ' Challeno-er.' 



Subsp. a. Petrochelidon timoriensis. 



Hirundo nigricans {nee V.), Wall. P. Z. S. 1863, p. 485. 



Adult male. Similar to P. nigricans., but very much smaller in 

 size, and distinguished by the dark smoky-brown colour of the rump, 

 the smoky colour of the uuderparts, and the greater extent of the 

 shaft-striping, which is very distinct and continues over the throat, 

 breast, and entire sides of the bodv. Total length 4-5 inches, culmen 

 0-3, wing 3-65, tail I -05, tarsus 6-4. 



In the other two examples in the British Museum the wing 

 measures 3*6 and 3-75 inches respectively. 



Hah. Timor; Flores. 



a. S ad. sk. 



b, V. Ad. sk. 



E. Timor. 

 Timor {Wallace). 



A. R. WaUace, Esq. [C.]. 

 Gould Collection. 



