BIEDS OF SOUTHWESTERN MEXICO. 11 



yet made their appearance in Mexico, examples of Nutnennis, Limosa. 

 Calidris, Ureunetes, &c. 



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

 Laridce which I have gathered on the shores of the Gulf of Tehuantepec 

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

 cepJialus atricilla, Sterna anglica, Sterna antillarum, Hydrochelidon fissipes, 

 and Bhynchops 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 presence of the first three of these 

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

 at Mazatlan, Colima, and Manzauillo. 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, ISro, and February, 

 1870, a single bird of this species {S. antillarwn) ] while in August, 1869, 

 they appeared there in considerable numbers. The natives have assured 

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

 banks which intersect the lakes in the neighborhood." 



• Fam. TrMDIB^. 



1. €atliai*u§ occMeifitafli^, Scl. 



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



2. TiirdMS iiiiastellmBS, Gm. 

 " Tehuantepec City.'^ 



3. Tufl*du§ §Tvaisi§oiBi, Cab. 



" Tehuantepec (Tapana) ; April 14, 1869. 



"Iris brown I bill black; base of lower mandible whitish ; feet pale 

 brownish." 



4. Twrdit§ ^rayi, Bp. 



" Tehuantepec (Santa Efigenia) ; December, 1868. 



" 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. Turdus llavirostris, Sw. 



"Tehuantepec City; November, 1869. 



" Iris ciunamou; bill yellowish, tip dusky; feet dull flesh-color." 



