BIRDS OF SOUTHWESTERN MEXICO. 11 



yet made their appearance in Mexico, examples of Numenius, Limosa, 

 Calidris, Ureunetes, «&c. 



" An interesting fact to be observed is that tbe greater part of tbe 

 Laridce wUich I bave gathered on the shores of the Gnlf of Tehuantepec 

 are identical with those of the Atlantic. I will give as examples Chroico- 

 cephaliis atricilla, Sterna anglica., Sterna antillarmn, Hydrochelidon Jtssipes, 

 and RhyncJiops nigra. 



" Professor Baird (Review of North American Birds, p. 267, and Dis- 

 tribution and Migration of North American Birds) has already men- 

 tioned, as a fact worthy of notice, the i^resence of the first three of these 

 species at Mazatlan. He speaks of the >S'. antillarum as a winter resident 

 at Mazatlan, Colima, and Manzanillo. It is curious that on the shores 

 of the Gulf of Tehuantepec the opposite appears to take place. At San 

 Mateo del Mar, a village eight leagues from Tehuantepec, I have not 

 seen, in the months of February and December, 18r9, and February, 

 1870, a single bird of this species {S. antillarum) ; while in August, 18G9, 

 they appeared there in considerable numbers. The natives have assured 

 me that in the month of June this Sterna makes its nest on the sand- 

 banks which intersect the lakes in the neighborhood." 



FaflBB. TURDIDJG. 



1. CatEaarus occideBBdaIi§, Scl. 

 " Sierra Madre, pres Zapotitlan ; January, 1870." 



3. Tuardtas BiBMsteliBiias, Gm. 

 " Tehuantepec City." 



3. Tufi'dtis §i\vamsoBBi, Cab. 



" Tehuantepec (Tapana) ; April 14, 18G9. 



" Iris brown ; bill black ; base of lower mandible whitilh ; feet pales 

 brownish." 



4. Tiifi'diis g-i'ayi, Bp. 



" Tehuantepec (Santa Efigenia) ; D^ember, 18GS. 



" Iris brown ; bill greenish-olive ; feet livid fleshy. 



" I have only observed this species at Santa Efigenia, where it is not 

 very abundant, and where its presence is explained probably by the 

 neighborhood of the Sierra de Chimalapa." 



5. TiiB*dus llavirostBois, Sw. 



'•Tehuantepec City; November, 1809. 



" Iris cinnamon; bill yello\<ish, tip dusky ; feet dull flesh-color." 



