APPENDIX TO CHECK LIST. 137 



No. 450? For occasion of the query see Key, p. 2G7. 

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

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



46Ga. RALLTTS ELEGANS AUD., 



var. OBSOLETUS Ridg. 

 Califomian Rail. 



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

 Faralloues by Mr. Ridgway (Amer. Nat., viii, 1874, 111). 



470a. PORZANA JAMAICENSIS (GM.) CASS., 



var. COTURXICULUS Bd. 

 Pacific Black Rail. 



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

 require further investigation. It will probably stand as 



472. GALLINULA CHLOROPUS LATH., 

 var. GALEATA (Licht.) Hartl. 



No. 479? Compare Key, p. 282. 



No. 489. A lighter colored form of dusky cluck, with a buff throat, is 

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



489a. ANAS OBSCURA GM., 



var. FULVIGULA Ridg. 

 Florida Dusky 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, Hydro- 

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

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

 flrst instance known of its occurrence in this country. 



[575bis.] HYDROCHELIDOW LEUCOPTERA (MEis.) BOIK. 

 White-wiiig-ed Slack Tern. 



CHECK LIST BIRDS. 9* 



