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Published online by Cambridge University Press: 31 May 2012
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.
* Of these the author examined 92 specimens personally; the rest were examined by Mr. F. M. Brown, who noted a trace of the costal vein in three or four specimens. In no case, however, did this vein in Catasticta approach the degree of prominence which is apparently normal for males of Archonias.