Genus — C OLLOCALIA. 
CoLLOCALiA Gray, List Genera Birds, 1840, p. 8 
Also spelt — 
Colocalia Gray, Cat. Gen. Subgen. Birds, p. 12, 1855. 
Callocalia Broadbent, Emu. Vol. X., p. 234, 1910. 
Salangana Lesson, Echo du Monde Savant, 10th year. 
No. 6, col. 134, July 20, 1843 
Hemiprocne Biemann, “ Zoolog-technol. Leitfaden ftir 
Bealschulen Gymnasien, 1838, p. 34 ” (Of. Ober- 
holser, Proc. Biol. Soc., Wash., Vol. XIX., 1906, p. 67) 
Not— 
Hemiprocne Nitzsch, Observ. Av. Arfcer. Carot. Com., 1829, p. 15. 
T3^pe C. esculenta. 
Type C. esculenta. 
Type G. esculenta. 
I HAVE noted the differential characters of this genus in connection with the 
preceding genus. 
The diagnostic characters of this form, in case it should occur in Australia 
are very simple : it is smaller than the preceding forms and of very different 
coloration, being blue-black above, with a strong gloss : underparts, throat 
and breast dark grey, the feathers with white edges : the abdomen all white : 
the tail with white markings on the inner-webs of the feathers towards the base. 
COLLOCALIA ESCULENTA. 
HmuNDO ESCULENTA, Linn6, Syst. Nat., ed X., p. 191, 1758 : China (errore). 
Collocalia esculenta (pt.) Hartert, Cat. Birds Brit. Mus., Vol. XVI., p. 509, 1892 ; 
Campbell, Nests an 1 Eggs Austr. Birds, Vol. II., p. 533, 1901; Mathews, Nov. Zool., 
Vol. XVIII., p. 29}, 1912 ; id., List Birds Austr., p. 152, 1913. 
Salangana esculenta Mathews, Handl. Birds Austral., p. 56, 1908. 
The only record of this species from Australia that I have traced consists 
of three specimens in the British Museum from “ Cape York, North Australia,” 
collected by J. T. Cockerell. These were catalogued in the British Museum 
Catalogue and thence crept into the Australian List. As, however, no other 
specimens have been yet procured, and the falsity of the “Cockerell” localities 
is now admitted, this species must be transferred to a suspense List. As it 
occurs on the Aru Islands, whence the Cockerell specimens in all probability 
came, it is possible it may occur on the comparatively unexplored northern 
coasts of Australia. 
O 
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