1872.] ON THE BIRDS OF CELEBES. 149 



having the crown of the head, the slioulder-coverts, the edgings of the quills, and the upper 

 surface of the rectrices of a deeper shade of blue-green. Dimensions of wing in M. wallacii, 

 seven inches and a quarter ; in M. klecho, six inches and a quarter. 



CoLLOCALiA, G. R. Gray. '^^- ^- '''• '^"■'• 



•^ p. 4G. 



53. CoLLOCALiA ESCULENTA (Linn.), Syst. Nat. ed. VI, i. p. 343. no. 2 (1766), ex Rumph. 

 Herb. Amb. ; Wallace, P. Z. S. 1863, p. 384. 



CoUocaJia hjpoleuca, G. R. Gray, P. Z. S. 1858, p. 170, " Aru Islands ;" Hand-list, no. 749 ; 

 Ann. Nat. Hist. ser. 3, vol. xvii. p. 120. 



Hab. Celebes, Timor, INIoluccas, Aru Islands ( Wallace). 



Notwithstanding the reasons advanced by Mr. G. R. Gray (/. c), Mr. Wallace's arguments 

 in favour of this species being the true Ilirmido esculcnta, 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, o/j. cit. p. 126). On the contrary, by the expression " 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 Linnteus 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, pi. 4, "Java" (1772); 

 Wallace,P.Z.S. 1863, p. 384. 



Collocalia nidifica, var., G. R. Gray, Ann. Nat. Hist. ser. 3, vol. xvii. p. 119; F. Moore 

 Cat. Mus. E. Ind. Co. i. p. 98. 



Hah. Macassar {Wallace); Java [H. esculcnta, ap. Ilorsf ) ; Sumatra {H. esculenta, ap. 

 Raffles) ; Bourbon, Mauritius (var. fmncica, Gm.) ; Neilgherries [H. unicolor, Jerdon, =C. con- 

 color, Blyth) ; Malabar coast and Western Ghauts {Jerdon) ; Ceylon {Layard) ; Darjeelino' 

 {Tickell) ; Assam {H. brevirostris, McClelland) ; Bootan {Pemberton) ; Sikim {Blyth) ; the whole 

 of the Malay islands ( Wallace). 



The further limits of this species depend on the true value of //. vanicorensis, Quoy & Gaim. 

 =M. leucophcea, Peale. 



HiRUNDiNAPUs, Hodgson. 



55. HiEUNDiNAPUS GIGANTEUS (V. Hasselt) : PL Col. livr. xli. pi. 364, " Java " (27th Aucrust, 

 1825). 



Chcetura gigantea, var. cclebensis, Sclater, P. Z. S. 1865, p. 609, " Menado." 



Hab. Java {type), Sumatra, Celebes {IIus. Lnr/d.) ; India {Jerdon) ; Ceylon {Layard). 



Dr. Sclater {I. c.) points out differences which 'distinguish the Celebean Hirumlinapus 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 



