188 



No. Species. Centre of abundance during breeding season 



213. Cygmis Americamis SHARPLESS. 

 *214 Branta Canadensis (L.). Secluded lakes. 



215. Branta Canadensis (L.), 

 var. HUTCHINSII Rich. 



*216. Anas boschas L. Ponds and marshy mead. 



chiefly in the valleys. 

 217. Anas obscura GM. 



*218. Daflla acuta (L.). With A. boschas.* 



*219. Nettion Carolinensis (GM.). 

 *220. Querquedula discors (L.). 

 *22l. Querquedula 



cyanoptera (VIEILL.). 

 *222. Spatula clypeata (L.). 

 *223. Chaulelasmus streperus (L.). 

 *224. Mareca Americana (GM.). 



225. Aix sponsa (L.). 



226. Pulixmarila (L.). 



227. Fulixmarila(L.). 



var. AFFINIS Forst. 



228. Fulix collaris (Doxov.). 



229. Ay thya Americana (EYTON). 



230. Aythya vallisneria (WILS.). 



231. Bucephala Americana (BON.). 



232. Bucephala albsola (L.). 

 *233. Erismatura rubida (WILS.). 



234. Mergus merganser L., 



var. AMKRICANUS Cass. 



235. Lophodytes cucullatus (L.). 

 *236. Pelecanus erythrorhynchus GM. 



237. Larus sp? 



238. Larus Delawarensis ORD. 

 *239. Sterna Forsteri NUTT. 



240. Hydrochelidon fissipes (L.). 



241. Colymbus glacialis L., 



var. TORQUATUS Brtinn. 



242. Podiceps auritus (L.), 



var. CALIFORNICUS Herrm. 



243. Podylimbus podiceps (L.). 



*The ducks and other Natatores nearly all breed in the same localities. 



