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March 7 / 70/ Bates – Bubas bison came next genus to Onitis, & the ♂has great projection on thorax & has a ridge exactly as ♀Onitis has a ridge. Hence in ♀Onitis it is certain that these ridges represent a thoracic projection. –so with radial cephalic Horn in ♀Onitis. – Naked some forms believed to belong to Onitis in B. [illeg] the ♂Thoracic horn. n the several spec of Onitis the inferior Horns developed in various curious ways & degrees; in some the [only] rudimentary fork – yet superior surface smooth. Hence if the upper horns have been lost by compensation subsequently the inferior projection have become rudimentary, without any

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development of the upper Horns. - The ♀ of 2 or 3 other sp. of Onitis besides O. furcifer has rudiment of cephalic Horns. - I saw other American genus, in which the legs were oddly & greatly developed, & no upper horns. In some spec. of Onitis the fork larger or smaller & in some the projection or anter. femora larger or smaller not correlated.