Some two years ago I received from Mr. E. A. Schwarz a single example of a curious Lucanide bearing labels “Kaweah, Cal.,” and “Ceruchus (?), n. sp.” This specimen, as I have since learned, was one of a considerable number taken by Mr. Ralph Hopping six years ago on grain and wild grasses growing near the grain on a small sandy hill at the locality indicated. In a letter just received from Mr. Hopping, he states that he has this year taken four fresh specimens, May 17–20, at the same place, one flying in the bright sunshine shortly after noon, the others at twilight. Mr. Hopping has kindly sent me three more specimens, and I have seen two others in the collection of Mr. Fuchs, also from the same source. These specimens are all males, and I have little doubt that Mr. Hopping's entire catch is of this sex.