122 CHECK LIST OF NORTH AMERICAN BIRDS. 



783. Rissa tridactyla kotzebmi (Bp.) Coues. B . c 552a. R 658a. (?) 



Kotzebue's Kittiwake. 



784. Rissa brevirostris Brandt. B 674, G75. c 553. R 059. 



Short-billed Kittiwake. 



785. Pagophila eburnea (Gm.) Kanp. B 676, 677. c 550. R 657. 



Ivory Gull. 



786. Chro'icocephalus atricilla (L.) Lawr. B 667. c 554. R 673. 



Laughing Gull. 



787. Chro'icocephalus franklini (Rich.) Bruch. B 668, 66'.). c 555. R 674. 



Franklin's Rosy Gull. 



788. Chro'icocephakis Philadelphia (Orel) Lawr. B 670. B 556. R 675. 



Bonaparte's Rosy Gull. 



789. Rhodostethia rosea (Macg.) Bruch. B 678. c 557. R 676. 



Wedge-tailed Gull. 



790. Xema sabinii (Sab.) Leach. B eso. c 558. R 677. 



Fork-tailed Gull. 



791. Xema furcata (Prov. & Des Murs) Bruch. B 679. C 559. R 678. 



Swallow-tailed Gull. 



792. Sterna anglica Mont. B 681. c 560. R 679. 



Gull-billed Tern ; Marsh Tern. 



783. R. t. kot-ze-bui'-i. To Otto de Kotzebue, the Russian navigator. 



784. R. brS-vi-ros'-tris. Lat. brevis, short, and rostris, pertaining to the bill, rostral; from 



rostrum. 



785. Pa-go'-phi-la g-bur'-ng-a. Gr. irdyos, ice, and (pi\os, loved. Lat. eburnea, of ivory, like 



ivory (in whiteness or hardness) ; ebur, ivory ; directly from the Sanscrit word for 

 elephant. 



786. Chro-i-c6-ceph'-a-lus a-trl-cil'-la. Gr. xp^^Ss, colored, and Kftpa^, head. This word 



has given great trouble from Eyton's, the founder's, saying it was from KpoiKos, there 

 being no such word. Various attempts to derive it from xpoia. or xP^ a > or from XP^. 

 Xpods, color, and to rectify the supposed erroneous orthography, have resulted in 

 kroikocephalus, chrcecocephalus, chroiocepJialus, chroocephalus. Wharton has shown Eyton's 

 original orthography to be correct, lacking only the diaeresis over the i, there being 

 actually such an adjective as XP> IK ^ S > not given in the common dictionaries. (See 

 Zoologist, March, 1878, p. . ) Lat. atricilla, black-tailed; only applicable to the 

 young bird. See Motacilla, No. 86. 



787. C. frank'-Hn-I. To Sir John Franklin. 



788. C. phil-a-del'-phi-a. To the City of Brotherly-Love. See GeoiMypis, No. 142. 



789. Rh6-do-ste'-thl-a ros'-g-a. Gr. p65ov, the rose, and arriQos, the breast ; rose-breasted. - 



Lat. roseus, rosy. 



790. Xg'-ma sa-bin'-i-I. Xema is a nonsense word, invented by Leach : it is sometimes written 



zema. To Edward Sabine, by his brother. 



791. X. fur-ca'-ta. Lat. furcatus, forked, furcate, bifurcate, forficate; furca, a fork. 



792. Ster'-na ang'-lT-ca. Sterna is not classic, having nothing to do with sttirnus, a starling, or 



with sternum, the breast-bone, or sterno, to strew. Agassiz gives the latter etymon. It is 



