176 



TOTIPALMATE SWIMMERS — STEOANOPODES. 





those of the TSiown IN'lifan tlian of iiny other Nortli American bird ; and they are 

 soiuetinies stained with l»h)oil, as that also commonly is. The calcareous coating is 

 thicker than it is on the eggs of other birds, with few exceptions, and it is very 

 generally marked with scratches and furrows, as if deposited in a soft state. In one 

 s])eeimen this coating was two millimetres in thickness, or nearly one twelfth of an 

 inch ; .so that the eggshell, though eiu])tie<l of its content.s, is nearly as heavy as an 

 ordinary one that has not been blown. In shape there; is a greater tcMidency to elonga- 

 tion or flattening of the ellipse than in the Pelicans. The color of the egg when it is 

 lirst laid is chalky-white, wiiic^h soon l)econu'S a dirty drab. Four eggs s»dected by 

 Dr. Bryant from many hundreds gave the following measurements : y.flO inches by 

 1.71) ; -.i/M by 2.04 ; a.L'u by 1.88 ; 3.26 by 1.G5. 



Sula cyanops. 



THE BLVE-FACBD OAHNET. 



Dysjxmui cijaiiopn, .Sundev. Phys. Tiilskr. Lund. 1837, pt. .5 j Ann. & Ma({. N. H. 1847, XIX. 230 



I'. Z. S. 1871, 12.5. 

 Suhi njiincps, SrxDKV. Isis, 1842, S'lS. — .Sai.v. Tnins. Zool. Soc. IX. ix. 1875, 4»0 (Oolapiigos ; 



ciitinil). — SiUKKTs, Hull. U. S. Nat. Mils. no. 7,1877, 24 (Christmiw I.). — Lawii. Pr. UosI.mi 



Sue. 1871 (Socorro I. W. Mexico). 

 Suhi pn-smiiiUi, (iiiAv, P. Z. S. 1846, 21. 



Su/u /imiilnr, Pkai.k, U. .S. Kx|i1. Kxp. Orn. 1848, 273 (not of LiNN, 1766). 

 Itivilliiijiijidu dinnict, Lawii. 1. c. 



IIah. Coasts and islands nftliu Soutli Pacific ; Bidiamas (breeding ; linVANT), and other Wist 

 India islands ; Soutlii rii +'l<inda. 



Sp. Chau. Larger than S. hmrmjHiitrn and H. jn'sMlor, the bill niiuh thicker through the base ; 

 feet rcddisli. AdiUl, jurfect pluimuje : (No. Il!»5;}. l^idLanias, Ajail, 1H5!) ; Dr. H. Bryant ') : 



L 



Prevailing color white, the greater wing-coverts, ahilre. primary-coverts, antl renuges, dark sooly 

 brown ; middle rectrices hoary white, 1)econung gradually sooty brown at ends ; otiier tail-featiicrs 

 hoary white banally, the exposed portion dark sooty brown. Bill (in skin) gmyisli yellow ; bare 

 skin of face, and gnlar sac blackish (blue in life) ; feet liglit reddish. Wing, Kt.l.'i inches ; tail. 

 7.7.'J ; culmen, 3.95; depth of bill through base, 1.40; tarsus, 1.80; middle toe, 2.80,* Yuun'j 



' Liilx'llcd " .S'. pnit'ii" nnd " .V. ehni/Kipn." 



* Till' iivcmge dinicuHions of this spt'cies arc considerably greater than those given alwve, six cxnmpli'^ 

 uvemging as follows ; 16.53 inches, 8.42, 3.00, 1.(4, 2.02, 2.88. The niaximuin in this series is 17.'li>, 



