THE LOGGERHEAD SHRIKE. 
139 
side, forming a large pad, as in the Thrushes. In this respect the Shrikes 
resemble the Turdince and Sylviance, much more than the Flycatchers, of 
which the inferior laryngeal muscles are small and blended. The bronchi 
are moderate, of about 12 half rings. 
The Green Briar, or Round-leaved Smilax. 
Smilax rotundifolia, Willd., Sp. PL, vol. iv. p. 119. Pursh, Flor. Amer., vol. i. 
p. 250. — Dicecia Hexandria, Linn. — Asparagi, Juss. 
This species of smilax, which is common along fences, in old fields, and 
by the borders of woods, is characterized by its shrubby stem, round 
branches, roundish-ovate, acuminate, slightly cordate, five or seven-nerved 
leaves, and spherical berries. It flowers in May and June. The berries 
are of a dark purple colour. 
The Field Mouse. 
This species is found in all parts of the United States, living in the 
meadows and woods. It forms narrow subterranean passages, to which it 
resorts on the least appearance of danger, but from which it is easily driven, 
by thrusting a twig into them. 
