laeidjE. — cxxviii. 221 



655. L. irauklini Swainson & Richardson. Franklin's Rosy 

 (JULL. Bill and feet carmine; bill usually with a dark band near 

 tip; medium. L. 14^. W. 11. B. 1^. U. S., chiefly W. of the 

 Miss. R. (To Sir John Franklin.) 



656. L. Philadelphia Ord. Bonaparte's Gull. Bill black, 

 slender, tern-like; small. L. 13. W. 10. B. 1\. N. Am., abundant. 



333. XEMA Leach. (A coined word.) 



657. X.sabinei (Sabine). Forked-tail Gull. Largely white, 

 a black hood and collar. L. 14. W. 11. Arctic, S. in winter 

 to N. Y. (To Edward Sabine.) 



334. GELOCHELIDON Brehm. (yeXaa), to laugh ; x^^'So)!', 

 swallow.) 



658. G. nilotica (Hasselquist). Gull-billed Tern. Bill 

 black, yery short and stout ; head black ; mantle pearly-gray. L. 

 15. W. 12. Atlantic, N. to Mass. (£«.) 



335. STERNA Linnseus. (Eng. tern, or sterne.) 

 a. Wing more than 9. 

 b. Wing more than 12. 



c. Tail much less than half wing, not deeply forked; occipital feathers 



short. (Tkalasseus Boie.) 



659. S. caspia Pallas. Caspian Tern. Primaries without 

 white band; bill red. L. 22. W. 17. T. 6. B. 3. Northern 

 regions; scarce in Amer., much the largest of the terns. (Eu.) 



CO. Tail more than one half wing, forked half its length ; occiput crested. 

 (Actochelidon Kaup.) 



660. S. maxima Boddaert. Royal Tern. Bill orange. L. 

 18 to 21. W. 15. T. 8. B. 2^. U. S. 



661. S. sandvicensis Latham. Sandwich Tern. Bill black, 

 yellow at tip. L. 16. W. 12^. T. 6. B. 2f Atlantic, N. to 

 Mass., rare. (Eu.) Ours is var. acuflavidus Cabot. 



bb. Wing less than 12 ; tail deeply forked; no crest; mantle bluish-gray, 

 the tail chiefly white; inner webs of quills largely white. {Stei-na.) 



d. Top of head black in summer. 



c. Outer tail-feather with the inner web dusky, the outer web white. 



662. S. forsteriNuttall. Forster's Tern. Larger than next, 

 tail longer and wings shorter; bill and feet orange in adult. L. 15. 

 W. 10. T. 7. B. \\. N. Am., common. (To John Reinhold 

 Forster.) 



ce. Outer tail-feather with inner web white; outer web dusky. 

 603. S. hirundo L. Common Tern. Bill red, blackening to- 

 wards tip; feet orange. L. 14^ (13 to 16). W. 10 (9| to 11|). 

 T. 6 (5 to 7). B. IJ. Atlantic coasts, abundant. {Eu.) (Lat., 

 hirundo, swallow.) 



