BIRDS. 135 



channels of Tierra del Fuego, the snow-white male, invariably accompanied by 

 his darker consort, and standing close by each other on some distant rocky point, 

 is a common feature in the landscape. Mr. Eyton has described the treachea of 

 this species, which I brought home. 



P^ciLONiTTA Bahamensis. Eyton. 



Psecilonitta Bahamensis, Eyton, Monog. p. 116. 



Anas Bahamensis, Linn. Syst. i. 199. 



Mareca Bahamensis, Stcpli. Gen. Zool. xii. p. 137. 



A specimen was procured from a small salt-water lagoon in the Galapagos 

 Archipelago (October.) 



It was a male ; bill, lead colour ; base of superior mandible purple, with a black 

 mark in the upper part. 



Dafila urophasianus. Eyton. 



Dafila urophasianus, Eyton, Monog. Anatidse. p. 112. 

 Anas urophasianus, King, Zool, Journ. iv. 351. 



Bahia Blanca, Northern Patagonia. 



Rhynchaspis maculatus. Gould. 



Rhynchaspis maculatus, Gould, in Jard. & Selby lUust. Orn. p. 147. pi. 147. 



Mr. Gould observes that, " A good figure of this beautiful shoveller may be 

 found in the 3rd vol. of Messrs. Jardine and Selby's Illustrations of Ornithology. 

 Their figure was taken from an example which I forwarded to those gentlemen 

 with the name o{ maculata attached: my specimen was received from the Rio Plata, 

 and this is also the locality whence (in October) Mr. Darwin's specimen was 

 procured. The numerous and conspicuous spots distributed over the body, 

 renders this species readily distinguishable from all the other members of the 

 genus." 



I. Querquedula erythrorhyncha. Eyton. 



Querquedula erythrorhyncha, Eyton, Monog. Anatidse, p. 127. 

 Anas erytlirorhyncha, Spix, Av. Nov. sp. pi. 



My specimens were obtained from Buenos Ayres {October) and the Straits 

 of Magellan {February.) 



2. Querquedui-a CRECcoiDES. Eyton. 



Querquedula creccoi'des, Eyton, Monog. Anatidte, p. 128. 

 Anas creccoides, Kiny, Zool. Journ. iv. 99. 



Mr. Gould observes that, " This species was first described by Mr. Vigors, 



