202 PROCEEDINGS OF THE ACADEMY OF [1890, 



collected along tlie Valladolid road from Tekanto to Tunkas espe- 

 cially near Izanial, Sitilpech and Shkolak. At the first of these 

 localities the forest is about the same as at Tekanto but after pass- 

 ing Sitilpech it becomes much denser and is not so dry, the trees are 

 much larger and are covered with orchids and bromelias. Here we 

 began to encounter birds of a more tropical character such as the 

 Yucatan Blue Jay, Aztec Paroquet, Guatemalan Ivory-billed Wood- 

 pecker, Booted Trogon and Euphonia. 



The vegetation is densest about half way between Sitilpech and - 

 Tunkas where there are two large pools of water or aguadas, at 

 Shkolak and Skashek, which probably communicate with under- 

 ground water courses. These are surrounded on all sides by a 

 luxuriant forest growth, and birds of all sorts abound. Several 

 species of water birds were seen here, most prominent among which 

 was the Mexican Jacana. Among the smaller birds the Tyrant 

 Flycatchers probably outnumbered all the others together — the 

 Giraud's Flycatcher being the most abundant. 



Along the range of hills to the west, collections were made at the 

 hacienda of Calcehtok near the western end of the range and at 

 Ticul, Uxmal and Labna. At Ticul the vegetation was much the 

 same as at Tekanto but on the southern side of the hills in the vicin- 

 ity of Labna it was denser and more tropical and the character of 

 the birds seen at the two places varied accordingly. 



Our visit to Yucatan (Feb. 22nd to March 26th) occurred during 

 the dry season and was probably not the best time for collecting 

 birds, as we were told that a little litter there was a migration of 

 birds to the northern part of the peninsula and that the more tropi- 

 cal species were then much more abundant. 



The following is a list of all the species observed by us with 

 such notes as we were able to gather in regard to their habits, etc. : 



1. Podilymbus podiceps (L.)? Pied-billed Grebe. 



Several birds supposed to belong to this species were seen swim- 

 ming in the aguada at Schkolak, but no specimens were obtained. 



2. Larus argentatus smitlisoniaiius Coues. Herring Gull. 



One seen flying about the vessel while at anchor off Progreso^ 

 March 22nd. 



3. Larus atricilla Linn. Laughing Gull, 

 Common off Progreso, March 22nd. 



