a large country of South America, situated between 19° and 27° S. lat.

CHÆROPHYLLUM, or Chervil, in botany, a genus of the pentandra digynia clas. The involucrum is concave and reflected; the petals are cordated; and the fruit is smooth and oblong. The species are seven, only two of which are natives of Britain, viz. the fylvette, or wild ciceley, or cow-weed; and the tumulum, or wild chervil. The leaves of the chervil are gently aperient and diuretic, and at the same time grateful to the palate and stomach.

CHÆTODON, in ichthyology, a genus of fishes belonging to the order of thoraci. The teeth are very numerous, thick, serraceous, and flexible: The rays of the gills are fix. The back-fin and the fin at the anus are flehy and squamous. There are twenty-three species, distinguished from each other principally by the figure of the tail, and the number of spines in the back-fin.