54 EXPLORATIONS AND SURVEYS WEST OF IOOTH MERIDIAN. 

 LARID^ (the Gulls and Terns). 



*204. Larus argentatus, Brunn., var. californicw, Lawr. California Her- 

 ring-Gull. 

 Common summer-resident; (Bidgway.) 



205. Larus delawarensis, Ord. King-billed Gull. 

 Rather common. Winter-resident. 



206. Chrcecocephalus Philadelphia (Ord). 

 Ogden, October 1. (Allen.). 



207. Xema sabinei (Sab.) Fork- tailed Gull. 

 One taken at Ogden September 28. (Allen.) 



*208. Thalasseus regius, (Gamb.) Eoyal Tern. 

 Not uncommon in summer. (Bidgway.) 



*209. Sterna forsteri, Nutt, Forster's Tern. 



Abundant. " Breeds in marshes of Salt Lake.' 7 (Bidgway.) 



*210. Hydroclielidon fissipes (L.) Short-tailed Tern. 

 Bather uncommon. "Breeds in marshes of Salt Lake." (Bidgway.) 



COLYMBID^E (the Loons). 



211. Colymbus glacialis, L., var. torqatus, Brtiun. Great Northern Diver. 

 Probably not of infrequent occurrence. 



PODICIPIDJE (the Grebes). 



212. Podieeps occidentalis (Lawr.) Western Grebe. 

 Common. Probably breeds. 



213. Podicep8 cornutus (Gm.) Horned Grebe. 

 Bather common in fall. 



214. Podilynibm podiceps (L.) Carolina Grebe* 

 Common in falL 



