VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 115 
ventral region and the under tail-coverts are fulvous, without any markings. The major 
wing-coverts are distinctly banded with alternate rufous and brown. A large white spot 
on each of the first four primaries. The chin, throat, and upper breast are clothed with 
feathers finely marked with fulvous-grey points on a brown ground. Many of the 
upper breast-feathers with bold rufo-fulvous tips. The middle rectrices have the 
general colouring and marking of the upper plumage, and are traversed by eight or 
nine more or less distinct irregular black bands. The two outer pairs are pure white 
throughout their entire length. The wing in six examples averages 6-25 inches, and 
the tail 4-25. 
This species, as has been well observed by Mr. Blyth (Cat. Calc. Mus. p. 84, note), is 
as diminutive as C. monticola, Frankl. 
2. CAPRIMULGUS, sp. ? 
A large dark-coloured Caprimulgus is among the novelties obtained in Celebes by 
Dr. Meyer. The example is unfortunately in such indifferent order that the inherent 
difficulties which attend the discrimination of many species of the family are very much 
increased. Above, this Celebean Goat-Sucker closely resembles Javan examples of C. 
macrourus, Horsf. Underneath, it is darker in colour, and the transverse barring of the 
abdominal plumage is less regular and well defined. The principal points in which it 
differs from a considerable series of C. macrourus are:—the great length of the rictal 
bristles, which measure a full inch ; the greater length of the bill; the smallness of the 
terminal white spots on the two outer pairs of rectrices; and the peculiar markings on 
the under surface of all the rectrices except the middle pair. In true C. macrourus 
the white terminal spot on the outer pair of rectrices measures about two inches; in 
this individual it measures only seven eighths of an inch. In the Javan bird the under 
surface of the rectrices is more or less uniform brown, without markings; this 
Celebean bird has some eleven or twelve distinct narrow rufous bars crossing the 
rectrices. Its first primary has no white spot, while on each of the three next it is 
much smaller than in C. macrowrus, which has a large white spot on all four primaries. 
The length of wing is equal to the average length observable in the Javan bird, seven 
and a quarter inches; nor do the dimensions of the tail (six inches) differ. 
As there are two Bornean species, C. arundinaceus, Jacq. & Puch., and C. binotatus, 
Bp., which have yet to be satisfactorily identified, I refrain from conferring a distinct 
title on this Celebean Nightjar. 
Cucu.us, Linn. 
3. CuctLus canorvs, Linn. S. N. i. p. 168 (1766). 
A single specimen obtained by Dr. Meyer in North Celebes is not to be distinguished 
from a British-killed example of the adult Common Cuckoo. The wing alone is 
shorter, 7°50 against 8°31; the tail is equal. Two other specimens, with the upper 
