456 



6 aestiv. supra nigra, ubique cinerascenti-brunneo lavata, et conspicue albo transfasciata : capite antico et 

 laterali cum colli lateribus pure albis, capite centrali et nucha, cinerascentibus et obscure nigro marmo- 

 ratis : tectricibus alarum dorso concoloribus, majoribus magis cinerascentibus : tectricibus primariarum 

 et remigibus nigris, pennis minoribus extus ad basin albis, secundariis intimis cinerascenti-brunneis 

 extus albo maculatis et nigro irregulariter transnotatis ; tectricibus supracaudalibus et cauda pure albis, 

 nigro transfasciatis : facie laterali, macula alba infraoculari excepta, et corpore subtus nigerrimis : 

 pectoris summi lateribus, abdomine imo cum cruribus, subcaudabbus et subalaribus pure albis : bis imis 

 fumoso-cinerascentibus : plumis axillaribus nigerrimis : rostro nigro : pedibus cinereo-nigris : iride 

 nigricante. 



S mari simillima. 



c? Mem. supra cinerascens, plumis medialiter nigricantibus, albo marginatis : fronte et pileo laterali cum 

 macula infraoculari albidis paullo cinerascente variis : genis albidis obscure nigricante striatis : tectri- 

 cibus alarum cinerascentibus dorso concoloribus sed latius albo marginatis : remigibus nigricantibus, 

 scapis medio albis, pennis minoribus magis cinerascentibus et albo terminatis, extus ad basin quoque 

 conspicue albis, secundariis intimis dorso concoloribus, nigricante transversim notatis, utroque pogonio 

 albo maculato : tectricibus supracaudalibus caudaque albis nigro transfasciatis, rectricibus exterioribus 

 fere omnino albis, sparsim nigro notatis : subtus albus, pectore antico et corporis lateribus cinerascente 

 variis : plumis axillaribus nigris. 



Juv. supra nigricans, ubique aurato maculata : collo postico et laterab genisque cinerascenti-albidis, nigricante 

 variis, his clarius cinerascente striolatis : fronte, loris et supercilio lato albidis, hoc nigricante hneato : 

 uropygio albo : cauda alba, aurato lavata : remigibus ut in adultis coloratis, sed magis cinerascentibus, 

 pennis minoribus extus ad basin conspicue albis, secundariis aurato lavatis et maculatis : subtus alba, 

 pectore superiore cinerascente et nigricante vario, paullulum aurato lavato : plumis axillaribus nigris : 

 subalaribus et subcaudalibus albis, illis imis fumoso-cinerascentibus. 



Adult male in breeding-plumage. Forehead and sides of the head and neck white, this colour extending all 

 down the latter, and widening out on to the sides of the upper breast ; centre of the crown dusky, owing 

 to the bases of the feathers not being completely obscured ; hinder neck also a little dusky ; back and 

 scapulars black, washed with ashy-brown here and there, and everywhere spotted or banded with white ; 

 rump more decidedly ashy brown, slightly varied with irregular white margins to the feathers; upper 

 tail-coverts pure white, with more or less complete bars of black across the feather ; upper wing-coverts 

 ashy-brown, especially the least ones at the bend of the wing, the feathers slightly mottled with black 

 and very thickly spotted and barred with white, the greater coverts entirely ashy-brown, irregularly 

 waved with white on the outer web, the outermost greater coverts and primary coverts blackish brown, 

 with only a spot of white at the tip ; quills black, the smaller feathers white on the outer base, showing 

 a conspicuous white speculum, the innermost secondaries ashy-brown, spotted with white on the outer 

 edge of both webs and indistinctly marked with oblique bars of black; tail white, irregularly barred 

 with black, the two centre feathers ashy-grey towards the tip ; sides of the face, with the exception of a 

 little white spot under the eye, and entire throat and breast black, the centre of the latter having one 

 or two white feathers ; sides of the body, thighs, and abdomen, as well as the under tail-coverts, pure 

 white, the latter slightly spotted with black; axillary plumes black; under wing-coverts white, the 

 lower ones smoky grey ; bill black ; legs greyish black ; iris blackish. Total length 10-5 inches, culmen 

 1-2, wing 7-5, tail 2-8, tarsus 1-65, hind toe 015. 



Adult female. Similar to the male, but has the breast not quite so deep black. We state this with some 



