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Published online by Cambridge University Press: 31 May 2012
My knowledge of this genus is derived wholly from Prof. Zeller's paper. It is equal in part at least to Holcocera Clem. (I have to thank Prof. Riley for calling my attention to the fact that in some of my references to this genus the name is incorrectly given as Holocera.)
B. sciaphilella., as described and figured, differs from H. triangularella Cham. as to the position, size and form of the triangular spots on the wings. Sciaphilella has distinct opposite, comparatively small costal and dorsal triangles, while triangularella has no dorsal triangle, but a single large costal one, wide upon the costa and crossing the fold, and it also has the apical part of the wing distinctly streaked and clouded with brownish gray.