2G0 LONG-WINGED SWIMMERS — LONGIPENNES. 



marked species, and as occasionally uttering, as it flies, a peculiarly shrill and plain- 

 tive cry. 



Colonel Grayson met with this bird in and about Mazatlan, and procured speci- 

 mens in December. A few other birds of this species were seen during the same 

 month, but they were not common in that locality. 



Mr. Salvin obtained a single specimen of this Gull in the plumage, which has been 

 described with the name of C. cucullatus, at Chiapam, on the Pacific coast of Guate- 

 mala, in January, 18G3. 



Mr. Donald Gunn, in his Xotes and Journal of his visits to Shoal and other lakes, 

 mentions his having met with this species. We copy from his Journal : — 



"We passed from Shoal Lake to Manitoba. The Franklin Gulls had forsaken the 

 marsh at the south end of that lake — which movement of theirs reduced us to the 

 necessity of following them to the north as far as Swan Creek. Here we found them 

 in considerable force. Their nests were among the bulrushes — flat on the water, 

 and composed of these rushes. We had a hard run for the eggs, as lots of fellows 

 from the Oak Point followed us, and began an active competition. However, we 

 secured one hundred and sixty-five of their eggs, and thirteen specimens of the Gulls 

 themselves." 



This Gull was found breeding at Selkirk Settlement and in the Red River Settle- 

 ment, as well as on Lake Manitoba, by Mr. Gunn. 



The Smithsonian Collection contains a specimen which 1 received from Professor 

 Kunilien in 1871 ; it was shot on the 29th of October. He writes me that but few 

 others have been noticed in that neighborhood. 



The ground-color of the eggs of this Gull varies from a pale grayish green to a 

 light drab, and even to an olive. The markings vary greatly in shape and size. 

 Some are rounded, others are zigzag ; some are large, and others are small ; and all 

 are of a very dark olive-brown. Those in the Smithsonian Collection were brought 

 by Mr. Gunn from Shoal Lake. Five eggs present the following measurements : 

 2.00 by 1.40 inches ; 2.00 by 1.45 ; 2.05 by 1.50 ; 2.15 by 1.45 ; 2.25 by 1.50. 



Larus Philadelphia. 

 BONAPARTE'S GULL. 



Sterna Philadelphia, Or.n, Guthrie's Geog. 2d Am. ed. II. 1815, 319. 



Chroicacephalus Philadelphia, La wit. in Baird's B. N. Am. 1858, 852. — Baird, Cat. N. Am. B. 1859, 



no. 670. — Newton-, P. Z. S. 1871, 57, pi. 4, fig. 6 (egg). — Coues, Pr. Ac. Nat. Sci. Philad.' 



1862, 310 ; 2d Check List, 1882, no. 7S8. 

 Larus Philadelphia, Gray, List Brit. B. 1863,235 (Great Britain). — Coues, Key, 1872,316; Check 



List, 1873, no. 556. 

 Larus Philadelphia, Saunders, V. Z. S. 1878, 206. — Ridgw. Nora. N. Am. B. 1881, no. 675. 

 Larus (Chroscoeephalus) Philadelphia, Coues, B. N. W. 1874, 655. 

 Larus nihilities, Sabine, App. Franklin's Voy. 1823, 696. — Sw. & Rich. F. B. A. II. 1831, 426 



(not of Pali,. 1776). 

 Lanes capistralus, Bonap. Specc. Comp. 1828, 69 (not of Temm. 1820). 

 ! Larus melanorhynchus, Temm. PI. Col. livr. 85, pi. 504 (1830; Chili). 

 Larus Bomapartii, Sw. & Rich. F. B. A. II. 1831, 425, pi. 72. — Nutt. Man. II. 1834, 294. — Aud. 



Orn. Biog. IV. 183S, 212, pi. 324 ; Synop. 1839, 323 ; B. Am. VII. 1844, 131, pi. 452. 

 Larus (Chroicoccphalus) subidirostris, "Br." Bnucil, J. f. O. 1853, 105 (type in Mus. Mainz). 



Hab. The whole of North America, but no valid record of its occurrence south of the United 

 States, except Bermudas (Hubdis). 



Sp. Char. Adult, in summer : Head and upper part of the neck dark plumbeous, the eyelids 

 marked by an elongated white spot. Lower part of the neck, entire lower parts, tail, upper tail- 



