synallagmatic (sin"alagmatik)

[= F. synallagmatique, The other Communes will enter the confederation by a synallagmatic treaty. Pall Mall Gazette. ( Imp . Dict .) Synallaxinæ (sin a-lak-si'nē), n . pl . [NL., Syn all axis + -inæ .] A subfamily of Dendroco laptidæ (or Anabatidæ ), represented by the large genus Syn all axis and about 18 other le er genera, of the Neo tropical region, where they replace to some extent the true creepers of other regions. The tail is fitted for climbing and scrambling about in trees and bushes, as in the creepers, and the feet are strongly prehensile, with large curved claws. They are small birds (a few inches long), but build huge coarse nests, sometimes 2 or 3 feet in diameter, or as large as a barrel, of sticks and twigs loosely thrown together, in the rece es of which the eggs are laid upon a nest proper of soft substances. There is great uniformity in the eggs, which are of a white or pale-bluish color. The subfamily is also called An a bat inæ.