Abstract

In the course of a series of dissections of various species of Pieridae, the author noticed what appeared tobe a costal vein in the forewing of a specimen of Archonias bellona Cramer. Further examination showed that there was indeed a costal vein present here, and this prompted a scrutiny of a considerable body of material in this ganus and others allied to it, the results of which are given in tabular form below.

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