240 ENTOMOLOGICAL NEWS. [Sept., '06 Preoccupied Generic names of Coleoptera. BY T. D. A. COCKERELL. Ill the course of my work on the list of Coleoptera of New Mexico, I have been struck by the number of preoccupied generic names which are still allowed to stand in our cata-logues. It occurred to me that it would be a useful service to make a complete list of these, and to this end I have examined every name given as valid in Henshaw's list, with respect to homonomy. As a result, I find nearly fifty names which are absolute homonyms, and a large number which differ from earlier named only in some minor feature (e. g. termination indicating gender), and would be considered homonyms by many. These latter should not, I think, be disturbed. I have not examined the names of the numerous genera described in recent years, since the publication of Henshaw's catalogue. In my manuscript, I have provided substitute names for nearly all the homonyms, but only part of them are given here, as although I have made much search for available synonyms myself, and the list has been kindly looked over by Mr. Fall, there is still a probability that several available substitute names will be discovered in the older literature. It is hoped that those who are aware of such will record them. CARABIDyE. 1. Diplochelia Brulle, 1835 (Diplochila of our lists), is Rembus, Latr.> 1817. The latter name was alleged to be preoccupied, but ap-parently in error ; hence it should be used for our species. 2. DiaphorusT)&)., 1831 (not Meig., 1824). 3. Euproctus Sol., 1851 (not Gene"., 1840). 4. Nothopus Lee., 1852, is Euryderus Lee., 1848, not Eurydera Lap. I do not consider these names the same, and think that Eury-derus should be restored. HYDROPHILID^. 5. Helopeltis Horn, 1873 (not Signoret, 1858) == Helopeliina n. n.; spe-cies Helopeltina larvalis (Horn). SILPHID^E. 6. Pelates Horn, 1880 (not Fisch, not Cuvier) == Pelatines n. n.; spe-cies Pelatines latus (Mann.). 7. Aglyptus Lee., 1866 (not Foerst, 1856) == Aglyptinm n. n,; species Aglyptinus Iccvis (Lee.).