LONGIPENNBS— LARIDAE— LAEUS DELAWARENSIS. 



485 



Pelecanus tracliyrliynclms, Bd., Stans. Eep. Exp. Great Salt Lake, 1852, 324. — Woodh., 

 Sitgreave's Exp. Zinii & Col. Riv., 1854, 105.— Newb., P. R E. Eep., vi, 

 1837, 109.— Heerm., P. E. E. Eep., x, pt. ii, 1859, 72.— Allen, Bui. Mus, 

 Comp. Zool., iii, 1872, 183.— GouES, Key K A. Birds, 1872, 300.— I<Z., Birds 

 Northwest, 1874, 586. 



Cyrto})eIecanus erytlirorynclms, Henry, Proc. Acad. Nat. Sci. Pbila., 1859, 109 (New 

 Mexico). 



In Stansbury's report of Great Salt Lake, mention is made of large 

 numbers of these bii'ds being seen in the lake, they breeding in the islands 

 thereof. In July, but few were seen, and we are informed they no longer 

 breed there. These birds were seen at Utah Lake late in July sparingly, 

 and in September on the sloughs of the Sevier. 



During the month of September, all leave this section for more southern 

 winter resorts. 



Order LONGIPENNES^ 



Long- WINGED Swimmers. 



Fam. LARIDAE: Gulls and Teens. 



LAEUS DELAWAEENSIS, Ord. 



Rin^-billed Gull. 



Larus delawarensis, Ord, Guthrie's Geog., 2d ed., ii, 1815, 319. — Lawr., Birds N. A., 

 1858, 840.- Bd., U. S. & Mex. Bound. Surv., ii, pt. ii, 1859, Birds, 27.— 

 Henry, Proc. Acad. Nat. Sci. Phila., 1859, 109 (New Mexico).— Coop. & 

 SucKL., P. E. E. Eep., xii, pt. ii, 18C0, 273.— Oayd., Trans. Am. Pliil. Soc, 

 xii, 18G2, 176.— COUES, Proc. Acad. Nat. Sci. Phila., 1866, 99 (Colorado 

 Eiver). — Allen, Bui. Mus. Comp. Zool., iii, 1872, 183. — CouES, Key N. A. 

 Birds, 1872, 313.— YARROW & Henshaw, Eep. Orn. Specs., 1872, Wheeler's 

 Exped., 1874, 33.— CouES, Birds Northwest, 1874, 636. 



This gull is common on the larger bodies of water throughout Utah. 



Numbers were seen on the Provo River late in November, when the lake 



was frozen over. They are without doubt winter residents here. Mr. Allen 



speaks of it as abundant about Salt Lake, where it breeds on the islands. 



