PODICIPID.!!) — THE GREBES — COLYMliUS. 



427 



(ilbill throu^'h ba.se, Ari-.hr, (.:,])■ tarsus, 2.:.'r.-2.7() (2.48); outur U>^^, 2.50-2.85 (2.(i3). 

 Ihccdimj-plumuijc : Throat and tliiu Imlly white, iiassiii},' posluriorly into riiii IV'rru;,'iiious 

 on the prominent auricuhir "frill," whicii is tiiijied with black; iiileum and elon^jated 

 tuft on each side of occiput, black. Ilah. Palajarctic Keyiou. 



tli(! throat, buIFy white, succeeded jiosti'riorly hy tVrruj^inous, on the basal portion of the frill. Upper parts 

 dark brownish gray, sometimes nearly or nuite black ; secondaries, anterior border of tin; wing, and inner 

 tcrtials, entirely white! ; lower i)arts white, the sides and Hanks grayish brown, tinged with lerrnginous. 

 " lUU blackish brown, tinged with carndnc [in the female " dusky green "] ; ban^ loral space dusky green, 

 ns is the edge of the eyelids ; iris bright carmine ; feet greenish black, tlic webs grayisli blue " (.Vuduhon), 

 Wuilcr phimiKjc : Similar to the summer dress, except the plumage of the head, the occi|)ital tufts and 

 the frill being entirely absent ; pileum and 

 nape sooty grayish brown, fading gradually 

 into grayish white on the lower part of the 

 head and neck, the foreneck [lale grayish ; 

 sides and Hanks without any reddish tinge. 

 Ihirnij ijoiinij : Neck with six longitudinal 

 dusky stripes alternating with as many 

 stripes of white ; that on the foreneck fainter 

 than the rest, and bifurcating Ih'Iow, each 

 branch extending toward the side of the 

 breast ; head with six dusky stripes, the 

 four upper ones being continuations of 

 the neck-stripes, the lifth and sixth running 

 across the cheek (one on each side of the 

 head) from beneath the eye back to Ixiueath 

 the ears ; a dusky spot on the lower jaw, 

 beneath the rictus ; chin and throat en- 

 tirely white. Upper parts sooty grayish 

 hrown, lower parts white. 



Total length, about 1!>.00-24.00 inches; 

 extent, 30.00-33.00 ; wing, 6.80-7.75 ; culmen, 1.7r(-2.30 ; depth of hill at base, .45-.55 ; tarsus, 2.25- 

 ■J.70 ; outi'r toe, 2.50-2.85. 



A specimen in summer dii\ss, said to have been obtained in (ireeidaud, is similar to European examjiles, 

 but has the wing shorter and the bill narrower than any of the live Knropean skins we have examined. 

 .\n example from Xew South Wales is not distinguishable in colors honi iMnvipcau ones, but is much 

 linger ; while two from bake Wakatipa, Xew Zealand, besides being even larger than the Australian 

 specimen, have much longer bills and tarsi, and arc altogether richer colored than any others, the upper 

 parts being deep brownish black, and the basal portion of the frills rich chestnut, while the crown and 

 occipital tufts are glossy greenish black. 



The following measurements exhibit the apparent geographical variations in size ; — 



WinK. 



Avenige of 5 E''''opean s[)eciuiens, 7.25 



( >ue speeinu'n sa. o lie from (Ireeidaud, fi.SO 

 Average of 2 New Zealand specimens, 7.47 

 One sjM'cimen from New South Wales, 7.30 



C. cristatus. 



