APPENDIX TO CHECK LIST. 137 



No. 450? For occasion of the query see Key, p. 267. 

 No. 466. A pale form is described from California. See Bldgway 

 (Am. Nat., viii, 1874, 111). 



466a. KALLUS ELEGANS AnD., 

 var. OBSOLETUS Eldg. 

 CalUornian Riiil. 



No. 470. A peculiar variety of the black rail is described from the 

 Farallones by Mr. Kidgway (Amer. Nat., viii, 1874, 111). 



470a. POEZAIfA JAMAICEIfSIS (Gm.) Cass.. 

 var. cOTUKNicuLus Bd. 

 Pacific ISIitcIi Kail- 

 No. 472. The relationships of this form to the European (?. chloropus 

 require further investigation. It will probably stand as 



472. GALLINULA CHLOKOPUS Lath., 

 var. GALBATA (Licht.) Hartl. 



No. 479? Compare Key, p. 282. 



No. 489. A lighter colored form of dusliy duck, with a buff throat, is 

 described from Florida (by Mr. Ridgway, I. c), where it is resident. 



489a. AWAS OBSCURA Gm., 

 var. I'ULViGULA Ridg. 

 Cloi'idan DusUy DucK. 



No. 493? The query indicates probability of only varietal distinction 

 from No. 492. 



No. 501 ? The query indicates probability of only varietal distinction 

 from No. 500. 



No. 575bis. A specimen of the European white-winged tern, JSydro- 

 ahelidon leucoptera, was taken in Wisconsin, July 5, 1873, by Th. Kum- 

 lein, and presented to the Smithsonian by Dr. Brewer. This is the 

 first instance Itnown of its occurrence in this country. 



[575bis.] HYDRO CHELIDOM" LEUCOPTERA (Meis.) Boie. 

 ^l^Iiite-iving'ed Black Tei'n. 



Check List Bikds. 9* 



