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Mr. Trimen also informs me that the lower surface of the wings in certain other Geometræ514 and quadrifid Noctuæ are either more variegated or more brightly-coloured than the upper surface; but some of these species have the habit of “holding their wings quite erect over their backs, retaining them in this position for a considerable time,” and thus exposing to view the under surface.

Quadri-, in words of Latin origin, four; as Quadrangular, four-angled; Quadrifoliate, four-leaved; Quadrifid, four-cleft.

And the phrases two-cleft, or, in the Latin form, bifid, three-cleft or trifid, four-cleft or quadrifid, five-cleft or quinquefid, etc., or many-cleft, in the Latin form, multifid,—express the number of the Segments, or portions.

Adj. quartered &c. v.; quadrifid†, quadripartite. rectangular.

Whether or not the decay of the imprisoned animals is an any way hastened, it is certain that matter is absorbed from them by the quadrifid and bifid processes.