46 VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 
CotuocaLia, G. R. Gray. 
53. CoLLOcALIA ESCULENTA (Linn.), Syst. Nat. ed. 12, i. p. 343. no. 2 (1766), ex Rumph. 
Herb. Amb.; Wallace, P. Z. 8. 1863, p. 384. 
Collocalia hypoleuca, G. R. Gray, P. Z. 8. 1858, p. 170, “ Aru Islands ;” Hand-list, no. 749; Ann. 
Nat. Hist. 3rd ser. vol. xvii. p. 120. 
Hab. Celebes, Timor, Moluccas, Aru Islands ( Wallace). 
Notwithstanding the reasons advanced by Mr. G. R. Gray (/. ¢.), Mr. Wallace’s argu- 
ments in favour of this species being the true Hirwndo esculenta, Linn., appear to me to 
be decisive. Rumphius does not speak of ‘the concealed white spots on the tail-feathers 
as if there were one on each” (Gray, op. cit. p. 126). On the contrary, by the expres- 
sion “only when the feathers are separated the white spots become visible,’ Rumphius 
leaves it to be inferred that all the white spots are concealed, and therefore that the 
middle pair of tail-feathers are immaculate. The statement of Linneus that “ all the 
tail-feathers are spotted with white,” is an inaccurate rendering of the description given 
by Rumphius. 
54. CoLLOcALIA FucIPHAGA (Thunberg), Act. Holm. xxxiii. p. 151, pl. 4, “Java” (1772); 
Wallace, P. Z.S. p. 384. 
Collocalia nidifica, var.,G. R. Gray, Ann. Nat. Hist. 3rd ser. vol. xvii. p. 119; F. Moore, Cat. Mus. 
E. Ind. Co. i. p. 98. 
Hab. Macassar (Wallace); Java (H. esculenta, ap. Horsf.); Sumatra (ZH. esculenta, 
ap. Raffles); Bourbon, Mauritius (var. francica, Gm.); Neilgherries (H. unicolor, 
Jerdon, =C. concolor, Blyth); Malabar coast and Western Ghauts (Jerdon); Ceylon 
(Layard); Darjeeling (Tickell); Assam (ZH. brevirostris, McClelland); Bootan (Pem- 
berton); Sikim (Llyth); the whole of the Malay islands ( Wallace). 
The further limits of this species depend on the true value of H. vanicorensis, Quoy 
& Gaim., =. leucophea, Peale. 
Hirvnpinarus, Hodgson. 
55. HiguNDINAPUS GIGANTEUS (V. Hasselt): Pl. Col. livr. xli. pl. 364, “Java” (27th 
August 1825). 
Chetura gigantea, var. celebensis, Sclater, P. Z. S. 1865, p. 609, “ Menado.” 
Hab. Java (type), Sumatra, Celebes (Mus. Lugd.); India (Jerdon) ; Ceylon (Layard). 
Dr. Sclater (/. c.) points out differences which distinguish the Celebean Hirundinapus 
from typical Javan and Sumatran examples. As one of these distinctions he mentions “a 
well-marked narrow white patch on the front on each side of the nostrils.” Dr. Sclater 
also alludes to the Celebean bird as “a very distinct form.” The white frontal marks 
are also found in the Indian bird, while in a Penang specimen, along with other slight 
differential characters, Dr. Jerdon (B. of Ind. i. p. 173) found the white frontal patches 
wanting. This Penang individual thus agreed with the type as described by Temminck. 
