LARIDA. — CXXVIII. 221 
655. L. franklini Swainson & Richardson. FRANKLIN’s Rosy 
GuLL. Bill and feet carmine; bill usually with a dark band near 
tip; medium. L. 14}. W.11. B.14. U.S., chiefly W. of the 
Miss. R. (To Sir John Franklin.) 
656. L. philadelphia Ord. Bonaparte’s Gutu. Bill black, 
slender, tern-like; small. L.13. W.10. B.14. N. Am., abundant. 
333. XEMA Leach. (A coined word.) 
657. X.sabinei (Sabine). Forkep-Tart Guu. Largely white, 
a black hood and collar. L. 14. W.11. Arctic, S. in winter 
toN. ¥. (To Edward Sabine.) 
334. GELOCHELIDON Brehm. (yeddo, to laugh; yxeddav, 
swallow.) i 
658. G. nilotica (Hasselquist). GULL-BILLED TERN. Bill 
black, very short and stout; head black; mantle pearly-gray. L. 
15. W.12. Atlantic, N. to Mass. (Eu.) 
335. STERNA Linnezus. (Eng. tern, or sterne.) 
a. Wing more than 9. 
6. Wing more than 12. 
c. Tail much less than half wing, not deeply forked; occipital feathers 
short. (Thalasseus Boie.) 
659. S. caspia Pallas. Caspran TrerRN. 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.) 
ec. Tail more than one half wing, forked half its length ; occiput crested. 
(Actochelidon Kaup.) 
660. S. maxima Boddaert. Royat Tern. Bill orange. L. 
18 to 21. W.15. T.8 B. 24. U.S. 
661. S. sandvicensis Latham. Sanpwicu Tern. Bill black, 
yellow at tip, L. 16. W. 12}. T.6. B. 2h. Atlantic, N. to 
Mass., rare. (Eu.) Ours is var. acuflavidus Cabot. 
6b. Wing less than 12 ; tail deeply forked; no crest; mantle bluish-gray, 
the tail chiefly white; inner webs of quills largely white. (Sterna. ) 
d. Top of head black in summer. 
e. Outer tail-feather with the inner web dusky, the outer web white. 
662. S. forsteri Nuttall. Forstrer’s Tern. Larger than next, 
tail longer and wings shorter; bill and feet orange in adult. L. 15. 
W.10. T. 7. B. 14. N. Am. common. (To John Reinhold 
Forster.) 
ee. Outer tail-feather with inner web white; outer web dusky. 
663. S. hirundo L. Common Tern. Bill red, blackening to- 
wards tip; feet orange. L. 144 (13 to 16). W. 10 (93 to 118). 
T.6(5to7). B.1}. Atlantic coasts, abundant. (£u.) (Lat. 
hirundo, swallow.) 
