432 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I50 



Migrant from the north. Several sight records indicate casual 

 occurrence. 



The Wilson's phalarope, in addition to following the sea, comes to 

 fresh and brackish waters regularly during its migrations between 

 its summer home in fresh- water marshes of the western United States 

 and Canada, and its wintering grounds, which are mainly in southern 

 South America. 



Eugene Eisenmann informs me that he observed this species at 

 Puerto Pilon, Colon, and at the Gatun spillway in the Canal Zone, 

 on August 28, 1958. It was found also at Coco Solo, Canal Zone, 

 September 28, 1958. Arbib and Loetscher (Auk, 1935, p. 326) re- 

 ported one seen at Gatun several times from August 22 to 26, 1934, 



LOBIPES LOBATUS (Linnaeus): Northern Phalarope; Pollito de Mar Boreal 



Tringa lobata Linnaeus, Syst. Nat., ed. 10, vol, 1, 1758, pp. 148, 824. (North- 

 eastern Manitoba.) 



Smallest of the phalaropes, with slender, pointed bill. 



Description. — Length, 170 to 190 mm. Posterior border of nostril 

 nearly in contact with frontal feathering ; tarsus short, about equal to 

 middle toe; lateral membrane of toes broad and prominent. Breed- 

 ing dress (males decidedly duller than females), head, hindneck, 

 and upper back dark gray ; rest of upper surface blackish slate, lined 

 with buff ; middle wing coverts tipped lightly with white ; primary 

 coverts and inner secondaries broadly margined with white; wings 

 dull black ; tail dull brown, the central rectrices blackish ; neck, includ- 

 ing sides, cinnamon ; upper breast, including adjacent sides dark gray, 

 with a slight mixture of this color on the cinnamon foreneck; throat 

 and rest of under surface white, with sides indistinctly lined with 

 light gray. 



Winter plumage, occiput and side of head from eye back over ear 

 coverts slate gray ; back mainly gray, edged more or less with white ; 

 head, except as indicated, and entire lower surface white. In Sep- 

 tember and October some of the buff markings of the summer dress 

 may be present. 



Measurements (from Ridgway, I.e., pp. 424-425). — Males, wing 

 102-109 (105.1), tail 46-50 (48.3), culmen 21-23 (22), tarsus 18-20 

 (19.2), middle toe 18-20.5 (19.5) mm. 



Females, wing 105-116 (110.2), tail 48.5-52.5 (50.2), culmen 20- 

 24 (22.4), tarsus 18.5-21 (19,8), middle toe 18-20 (19.1) mm. 



Migrant from the north. One record in the Gulf of Panama. 



The northern phalarope nests in the far north in both New and 



