R.K.Selander, 1953 67 La Polka, 25 ft Chiapas, Mexico Oct. 28 mountains is farther inland and runs in pretty much a straight line SE. However, more seaward there are a series of these dry, small hills which seem to surround the laguna, (See maps). Took two specimens of nigricaudatus. Returned on train at 9:00 P.M., arriving at Tonalá around 7:15.. Caloitta formosa in a flock of 15 or more birds in corn field. Took one specimen. Icterus gularis common. Fregata magnificens flying over the hills and the laguna. Many Aratinga. Laughing one falcon seen. Caracara (cheirway) - pair seen. Cassidix mexicanus and Crotophaga suleirostris common. Many herons and ducks in the laguna. Saw one spoonbill and several brown pelicans. Land south to about Esmeralda is the same as at Tonalá. Savanna with large trees and thick hedgerows of bushes, vines and smaller trees. Nearing the laguna the forest, trees are smaller in height and much drier in appearance. Bull. horn acacia was fairly common around La Polka but was smaller - both thorns and leaves - and may be another species than that around Tonalá. Several natives at La Polka said it is possible to drive by car from Tonalá to La Polka and beyond in dry months - March - May. The road is not shown on the map I have, however.