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Show 348 INSECT A. PHYSODAOTYLus, Fisch. An orbicular membranous . pelle. t . (sole fo r planta) on the infer't or surface of the three intermedtate JOints o the tarsi; the posterior thighs enlarged; the antennre, at least in one of the sexes, very short serrated, and insensibly diminished towards the extremity. ' This suhgenus has been established by the celebrated author of the Entomographia Imperii Russici, on an Insect from North Arne· rica, the P. HenningU, Letter on the Physodactylus, Moscow, 1a24, Ann. des Sc. Nat. Dec. 1824, XXVII, B. CEBRio, Oliv. Fab. In Cebrio proper, all the joints of the tarsi are entire and without pellets, and the posterior thighs are not larger than the others. The species peculiar to Europe appear in great numbers after heavy rains. The female( 1) of the best known speciesC. gigas, Fab.; C. longicornis, Oliv., Col. II, 30, his, I, 1, a, b, c; Tau pin, I, 1, a, b, c,-differs greatly from the male; the an· tennre are hardly longer than the head, and the first jointis much longer than the others; the fourth and following ones united form a little oblong and almost perfoliaceous mass. The wings are partly abortive. The legs are shorter, but stouter in proportion, than those of the male. The larva probably lives in the earth. ·rhe C. bicolor, Fab.(2), and some other Amet·ican species, in which the body is elongated, less arcuated above or almost straight, and with shorter antennre, appear to Dr Leach to constitute a new generic section(3). Here the prresternum is not prolonged into a point, and there is no anterior cavity in the mesosternum. I (1) Cebriobrevicomis, Oliv., Col. II, 30, his, I, 2, a, b, c; 11nebriodubiua,Rossi, Faun. Etrusc. I, 1, 2. This female, on account of her antenna:, appeared to me to form a new genus which I accordingly established under the name of HammtJ. nia. A species is found at the Cape of Good Hope, each joint of whose antennz throws out a long and linear branch from the base of its internal side, and whose palpi terminate in an ovoid joint, and not in the form of a reversed cone, as in the other species. This latter may be separated from them. (2) Palisot de Reauvois, Insect. d' Afr. et d' Am., I, 1, 2, a, b. ( 3) The Ceb. fuscus and ru.ficollis, Fab., have the form of the species he calls the gigtu. The second was brought from Sicily by ?1{. Lef6vre. The Gebrio femrr ratus, of Germar, does not belong to tlle genus .O.nela8tu of Kirby, as I once sup· posed. COLEOPTERA. 349 Sometimes all the joints of the tarsi are entire, and without a projecting membranous palette underneath. ANELASTEs, Kirby. The antennc:e remote at base, short, almost granose, with the last joint(l) neariy crescent-shaped; last joint of the palpi almost in the f~rm of a reversed cone . .fl. Drurii, Kirb., Lin. Trans., XII, xxi, 2. The only species quoted. CALLIRHIPis, Lat. The antennc:e closely approximated at base, inserted on an eminence, and from the third joint, in the males, forming a large fan; the last of the palpi ovoid, the same of the tarsi almost as long as all the others taken together, and presenting between its crotchets a little silky and linear appendage. The species which is the type of the subgenus-C. Dejeaniiis found in Java, and was sent to the Museum of Paris by M. Diard and the late M. Duvaucel. The antennre consist of but eleven joints, and in that differ from those of the Rhipicerre, which have the same form, but are composed of more joints in individuals of the same sex, or the males. Sometimes the inferior surface of the tarsi is furnished with membranous palettes, or their penultimate joint is profoundly bilobate. In the two following subgenera, the inferior surface of each of the four first joints of the tarsi presents two membranous and projecting Jobes; the last is long, and terminated between the crotchets by a little silky appendage. The antennre of some are composed of more than eleven joints, and are flabelliform; those of the others consist of eleven, and are serrated, the four last larger, and forming a club. SANDALus, Knoch. The antennre, at least those of the females, only a little longer than the head and consisting of eleven joints, the third, and with the exception of the last, the following ones serriform, the four last somewhat more dilated, forming a club; the terminal joint almost ovoid or rounded, or very obtuse at the end(2). (1) The third is longer than the preceding and following one, whilst in Cebri.o, this joint and the second are shorter than the fourth and following ones. These organs, like those of the Elaterides, seem to be composed of twelve joints, the eleventh being suddenly contracted near the extremity, and terminated by a point having the appearance of a little conical or triangular joint. (2) &ndalus petrophya, Knoch, N. Beyt., r, p. 131, v, 5;-S. niger, Id. lb. |
