APPENDIX. 47 



Page 319. 

 GENUS DIOMEDEA. 

 . spadicea Gin. young of D. exulans L. 



0. exulans L., & Thalassogeron chlororhynchus (Gni.) do not occur oil the 

 United States' coasts. 



Page 319. 

 GENUS ALCA. 



A. /abracfora Gm. is probably a Puffin; perhaps, as Dr. Coues suggests* 

 a young Lunda cirrhata Pall. 



Page 319. 

 GENUS COLYMBUS. 



C. striatus Gm. = Urinator lumme (Gunn.) young. 

 C. septentrionalis L. <fi stel/atus Brunn=t/. lumme (Gunn.). 

 C. glacialis L. & immer ~L,. = L T . i in her (Gunn.). 



Page 319. 

 GENUS STERNA. 



S. cayanensis Gm.=5'. maxima Bodd. 

 S. minuta Wils.=6". antillarum (Less.). 

 S. fissipes ~L,.=Hydrochelidon nigra surinamensis (Gm.). 

 S. aranea'W\\s.=Gelochelidon nilotica (Hasselq.). 

 S. plumbea ~W\\s.Hydrochelidoti n. surinamensis (Gm.), young. 



"BANDED-TAIL T. S. PHILADELPHIA." This is a new species here de- 

 scribed for the first time by Ord. It is however a true Gull and not a 

 Tern, and is now known as Lams Philadelphia (Ord). 



S. simplex and spadicea are unidentifiable. 



Page 319. 

 GENUS LARUS. 



L. canus is a European species; the American bird is L. brachyrhynchus 

 Rich. 



L. fuscus L,. is a European species. 

 L. ridibundus Wils.=Z. alricilla Linn. 



