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474 Mr. J..H. Gurney’s Notes on 
In the two specimens in the Norwich Museum the basal 
white band on the tail is somewhat less narrow, being about 
‘75 of an inch wide on the central rectrices, and increasing 
towards the outermost rectrices, on which the white base is 
of the width of 4 inches. 
Another nearly allied but decidedly smaller species, L. la- 
cernulata, presents a somewhat more marked variation between 
the adult and immature plumages than occurs either in L. pal- 
liata or in L. albicollis. In an adult specimen in the collection 
of Messrs. Salvin and Godman, from Rio Janeiro, the upper 
surface of the head is of a delicate grey, paler than the tint 
of the hind neck, but not absolutely white as in the speci- 
men described by Mr. Sharpe; also, in this example the 
white bars on the upper tail-coverts are not visible, except 
when the feathers are disarranged. With regard to the ordi- 
nary immature plumage, I may remark that it differs from 
the adult, not only in the particulars mentioned by Mr. 
Sharpe, but also in the ground-colour of the entire mantle 
being of a much blacker hue than in the adult, and with a 
less tinge of grey. One specimen in Messrs. Salvin and 
Godman’s collection, from Bahia, apparently a very young 
bird, further differs both from the second or ordinary immature 
plumage and also from the adult in having all the feathers of 
the wing-coverts narrowly tipped with rufous brown, except 
those nearest the carpal joint, which are similarly tipped with 
white, the scapulars and interscapulars are also tipped with 
rufous brown, but less conspicuously than the wing-coverts. 
In this specimen the lower part of the black portion of the 
tail is crossed on the outer rectrices by six irregular white 
bars; on the other rectrices these become fewer in number as 
the centre of the tail 1s approached, and the central rectrices 
show but two such bars, of which the upper one is nearly 
obsolete. 
Messrs. Salvin and Godman also possess a specimen from 
Demerara of another allied species, L. melanops, in immature 
plumage of similar character to the above; in this bird the 
entire mantle has the feathers narrowly tipped with rufous 
brown, as in the first stage of L. lacernulata; this immature 

