1890.] NATURAL SCIENCES OF PHILADELPHIA. 211 



87. Dendroica palmarum (Gm.). Palm Warbler. 



One shot among the mangroves at Progreso, March 19th, 



88. Seiurus noveboracensis (Giu.). Water Thrush. 

 Common among the mangroves at Progreso. 



89. Geothlypis trichas (Linn.). Maryland Yellow-throat. 



Tolerably common at Merida and Tekanto and abundant on the 

 mountains at Ticul, March 17th. 



90. Setophaga ruticilla (Linn.). Red-start. 

 Several males seen near Tekanto, March 7th. 



91. Mimus gracilis Cab. Yucatan Mockingbird. 



Common throughout though most abundant in dry scrubby locali- 

 ties. Observed at Progreso and all over the mountains near Ticul. 

 The four specimens collected vary somewhat in the amount of white 

 on the tail and in the color of the back. 



92. Campylorhynclius guttatus (Gould). Yucatan Cactus Wren. 



Common in the scrubby growth which covers the sand hills at 

 Progreso. A nest was found nearly completed March 19th. 



These birds keep well covered in the bushes and are very hard to 

 shoot. 



93. Troglodytes brachyurus Lawr. 



Tolerably common about Tekanto and other places where the 

 vegetation is low and scrubby. 



94. Polioptilacaerulea (Linn.). Blue-Gray Gnatcatcher. 



Common throughout the interior but most abundant in the drier 

 and more open districts. 



95. Polioptila albiventris Lawr. Lawrence's Gnatcatcher. 



One male shot at Progreso, March 19th. Not seen elsewhere. 



96. Merulagrayi Bonap. Gray's Thrush. 



One shot near Labna, March 15th, and several others seen at Ticul. 



Mexico. 



At the town of Orizaba a few specimens were collected but we had 

 not time to procure anything like a full series of the avifauna of the 

 region. The town lies in a narrow winding valley at an altitude of 

 about 4,000 feet and is surrounded on all sides by hills and moun- 

 tains ; the vegetation is very luxuriant and the Rio Blanco, a moun- 

 tain stream, runs thi'ough the valley. The following species were 

 observed during our stay in the town : 



