AVES. 17 



LONGIPENNES. 



LARIDAE. 



31. Sterna caspia Pallas. 



Caspian tern; Squawker. 



Pallas, Nov. comm. petrop., 1770, vol. 14, pt. 1, p. 582, pi. 22, 

 fig. 2. '.'mare caspium et circa ostium Iaici." Dresser, Birds 

 of Europe, 1871-81, vol. 8, pi. [584]. Egg, Seebohm, 1896, p. 100, " 

 pi. 31, fig. 2. 



Sterna tschegrava Lepech. Chapman, Handb. birds east. No. 

 Amer., 1895, p. 79, fig. 61, a. 



Seacoasts and lakes; nests on the ground. 



Me.— Rare migrant. May 11; Aug.-Sept. (Oct. 16). 

 N. H. — Rare migrant: Hampton, 1899. 



Mass. — Rare spring and uncommon fall migrant. Early May; 

 Aug. 8-Sept. 26. 



R. I.— Rare migrant. May 10; July 27-Oct. 



32. Sterna maxima Boddaert. 



Royal tern; Cayenne tern. 



Bodd., Tabl. d. planch, enlum. d'hist. nat., 1783, p. 58. Based 

 on Bufl^on: "Cayenne." Chapman, Handb. birds east. No. 

 Amer., 1895, p. 79, fig. 61, b. 



Sterna cayana Lath. Audubon, Birds of Amer., 1844, vol. 7, 

 p. 76, pi. 429. 



Seacoasts and lagoons; nests on the ground. 



Mass. — Accidental visitor: Chatham, July 29, 1889; Ipswich, 

 July 17, 1904; Nantucket, July 1, 1874. 



33. Sterna sandvicensis acuflavida (Cabot) Ridgway. 



Cabot's tern. 



Sterna acuflavida Cabot, Proc. Boston soc. nat. hist., 1847, vol. 

 2, p. 257. "Tancah, on the Coast of Yucatan." 



