450 MR. A. BOUCARD ON BIRDS FROM YUCATAN. [June 19, 



93. SiTTASOMUS OLIVACEUS. 



February 1879. Iris black. 



Rare, being met with only in Izalam and in Tizimin. This bird 

 is only seen moving about the trunks of trees and mostly upon the 

 smaller limbs, for the climbing of which its tail is remarkably adapted. 

 Each of its tail-feathers is tipped with a sharp spine, which together 

 form a semicylindrical end, and fit exactly to the limbs upon which it 

 generally moves. 



94. Dendrocincla anabatina, Sclat. 



Common in the forests only, but not seen near the rauchos. 



95. Dendrocincla homochroa, Sclat. 



Izalam. 



Not common, though occasionally found in all the eastern forests, 

 quite shy and rarely quiet. This bird is generally seen upon the 

 trunks of small trees and bushes, where it finds its favourite food. 



96. Dendrornis eburneirostris. Lesson ; Lawr. /. c. p. 201. 

 Common in all the large forests, but never seen near the rauchos. 



Ever busy, climbing about the dead trees, from which it tears the 

 loose bark in search of its favourite worms. It is very tame and 

 easily approached. Rarely mounts to the top or descends to the 

 roots of the tree. Its flight is always downward ; and on alighting 

 some distance above the ground, it begins to move up until it has 

 searched well the trunk of the tree, then it passes to another. 

 [Also in Dr. Cabot's collection. — O. S.'] 



97. Thamnophilus doliatus (L.). 

 Tkamnojphilus affinis, Lawr. l. c. p. 201. 



Very rare ; the first was met with at Tzalam near Izamal in Jan. 

 1879. Afterwards it was seen twice in Tizimin. Lives in low bushes, 

 and is very tame. 



98. FoRMiCARius PALLiDus, Lawrcncc, Ann. N. Y. Ac. Sc. ii. 

 p. 288 (1882). 



Not common. I agree with Mr. George N. Lawrence that this 

 species is quite distinct from F, moniliyer. The description given 

 by Mr. Lawrence agrees exactly with the specimens sent to me. 



99. Sphenoproctus pampa (Lesson). 



Rare in Yucatan. Four specimens of this bird were seen near 

 Izalam, and three afterwards in Tizimin. It lives only in the most 

 distant and secluded forests, and is extremely shy. Its song is not 

 harmonious nor sweet, though it sings and chatters a great deal and 

 very loudly. It was only on account of the great noise made by this 

 bird that I was ever able to see it alive. Like all the Humming-birds, 

 it flies very swiftly, and is never seen a second time. 



