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In the Staphylinidae, the horns of the males are extraordinarily variable in the same species, just as we have seen with the Lamellicorns. In Siagonium we have a case of dimorphism, for the males can be divided into two sets, differing greatly in the size of their bodies and in the development of their horns, without intermediate gradations.
Waterhouse informs me, that of the Harpalidae there are eight or nine species the forms of the greater number being very peculiar; of Heteromera, four or five species; of Rhyncophora, six or seven; and of the following families one species in each: Staphylinidae, Elateridae, Cebrionidae, Melolonthidae. The species in the other orders are even fewer.
Although T had already been working this shot daily for two months and a half, and had obtained over 800 species of Coleoptera, this day's work added 32 new ones. Among these were 4 Longicorns, 2 Caribidae, 7 Staphylinidae, 7 Curculionidae, 2 Copridae, 4 Chrysomelidae, 3 Heteromera, 1 Elates, and 1 Buprestis.
By sweeping with my insect-net, I procured from these situations a considerable number of minute insects, of the family of Staphylinidae, and others allied to Pselaphus, and minute Hymenoptera. In Tierra del Fuego, above the region of woodland, the former of these eminently sociable plants is the chief agent in the production of peat.
See Humboldt's interesting discussion on this plant, which it appears was unknown in Mexico, in Polit. Essay on New Spain, book iv. chap. ix. By sweeping with my insect-net, I procured from these situations a considerable number of minute insects, of the family of Staphylinidae, and others allied to Pselaphus, and minute Hymenoptera.
I believe I must except one alpine Haltica, and a single specimen of a Melasoma. Mr. Waterhouse informs me, that of the Harpalidae there are eight or nine species the forms of the greater number being very peculiar; of Heteromera, four or five species; of Rhyncophora, six or seven; and of the following families one species in each: Staphylinidae, Elateridae, Cebrionidae, Melolonthidae.
Stansbury, Captain, observations on pelicans. Staphylinidae, hornlike processes in male. Starfishes, parental feeling in; bright colours of some. Stark, Dr., on the death-rate in towns and rural districts; on the influence of marriage on mortality; on the higher mortality of males in Scotland. Starling, American field-, pugnacity of male. Starling, red-winged, selection of a mate by the female.
A morning's search at these often produced me a score of species Staphylinidae, Nitidulidae, Onthophagi, and minute Carabidae, being the most abundant. About the latter part of September a heavy shower of rain fell, admonishing us that we might soon expect wet weather, much to the advantage of the baked-up country.
If the male is removed the female ceases all work, and as M. Brulerie believes, would remain on the same spot until she died. 'Ann. Soc. Entomolog. Chiasognathus Grantii, reduced. The great mandibles of the male Lucanidae are extremely variable both in size and structure, and in this respect resemble the horns on the head and thorax of many male Lamellicorns and Staphylinidae.
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