964 



SYSTEMA TIC SYNOPSIS. — STEGANOPODES. 



similar, but no crests, and eyelids not blue ; bill bright yellow, blackening along culmen, gular 

 sac red anteriorly, ochrey-yellow posteriorly; feet dull black. Length 30.00-33.00; extent 

 50.00 ; wing 12.00-13.00 ; tail 6.00-7.00 ; tarsus a little over 2.00 ; bill along gape 3.50 ; 

 along culuien 2.30 ; the shape of bill and size of hook much as in carbo. ? rather smaller 

 than $. Young: Plain dark brown, paler or grayish (even white on breast) below. North 



Fig. CTG. — Double-crested Cormorant, nat. size. (Ad. nat. del. E. C.) 



America, the commonest species, and the only one generally diffused over the interior; S. in 

 winter to the Gulf coast, breeding in summer from the northern U. S. northward. Eggs 

 3-4 or more; 2.50 X 1-55. This is the stock form, replaced southwardly in eastern North 

 America by floridanus in summer, and on the Pacific coast by cincinnatus northerly, by 

 albociliatus southerly. 



P. d. cincinna'tus. (Lat. cincinnatus, having curly hair. Fig. 677.) White-crested 

 Cormorant. General character of the preceding, of which it appears to be a large northern 

 variety. White lateral crests, of a superciliary bundle of long curly filamentous feathers. 

 Larger: size of carbo; length up to 36.00; wing 13.00-14.00, etc. Northwest coast; 

 breeds in Alaska, S. in winter along the California coast. 



P. d. florida'nus. FLORIDA Cormorant. "Nigger Goose." Similar to but smaller 

 than P. diloplms. Length 30.00 or less, sometimes only 22.00 ; extent about 45.00 ; wing 



12.50 or less; tail 6.00 or 

 less ; tarsus a little under 

 2.00 ; but bill as large as 

 if not larger than that of 

 diloplms ; gape nearly 

 4.00; culmen up to 2.40. 

 The plumage is exactly 

 the same as in diloplms. 

 There are said to be cer- 

 tain differences in the life- 

 colors of the bills (blue 

 instead of yellow on un- 

 der mandible and edges 

 of upper — Audubon), but none show in my specimens. As originally stated in Key, 1872, 

 this is simply a localized southern race of diloplms, smaller m general dimensions, with rela- 

 tively larger bill, as usual in such cases; sac apparently more extensively denuded. Florida 

 and Gulf coast, resident, breeding by thousands on mangrove bushes ; ranging up the coast 

 to North Carolina, and up the Mississippi Valley to Ohio. Eggs about 2.40 X 1.50. 



Fig. 677. — White-crested Cormorant. 



Fuertes.) 



