V. ON THE CHARACTERS OF ABBOTIA, A NEW GENUS BELONGING TO THE FAMILY HISTERIDE, WITH DESCRIPTIONS OF TWO SPECIES; BY WILLIAM ELFORD LEACH, M. D. F. R. S. &c. HONORARY MEMBER OF THE PLYMOUTH INSTITUTION. ABBOTIA. CORPUS elongatum, angustum, depressum, thoracis et elytrorum, superficies convexiuscula. Sternum antice emarginatum. Mandibula æquales edentulæ labiales filiformes. Body elongated, narrow, depressed, with the surface of thorax and of the elytra, slightly convex. Sternum, anteriorly notched Mandibles equal, toothless. Maxillary palpi setaceous Labial palpi filiform. 1. Abbotia paykulliana. A. Corpore toto glaberrimo atro nitente: elytris externe, striis externis perfectis, et duabus interioribus imperfectis, sculptis. Antennis pedibusque piceis; tibiis anticis et mediis trispinosis; posticis uni-spinosis. Longitudo 0003 millime trorum. Habitat in Georgia America. Thorax lateraliter tenue, abdomine, extremitate posteriore fortiter, sternoque lateraliter, tenuiter, punctatum. A. With the whole body very smooth, jet black shining; with the elytra sculptured externally with two perfect, and with two imperfect striæ; the antennæ and the feet pitch black; with the interior and middle pair of the tibiæ threespined; the hinder pair one-spined. Length 131-12 of an inch. Inhabits Georgia in America. Thorax punctulated laterally, slighty; the extremity of the abdomen strongly, and the sternum, laterally, slightly. 2. Abbotia Georgiana. A. Corpore glaberrimo, aterrimo, nitente; elytris striis tribus externis perfectis; et striis tribus internis imperfectis sculptis; tibiis anticis quatuor, mediis tribus, et posticis unispinosis. Longitudo 1000 41 millemetrorum. Habitat cum præcedente. Thorax lateraliter tenuiter abdomine infra et ad apicem posticum fortiter, et sternum lateraliter tenuiter impresso punctatis. A. With the body very deep jet black, shining; with the elytra sculptured; three external perfect and three internal imperfect striæ; the anterior pair of the tibia with four, the middle with three, the hinder pair with one spine. Length 21-12 of an inch. Inhabits the same country with the preceding species. Thorax, laterally slightly, the under part of the hinder part of the abdomen strongly and the sternum laterally slightly sculptured with impressed dots or spots. I have named this genus in honour of Mr. Abbot, a most industrious collector of insects, and a very celebrated entomological artist. Both these species are in my collection in the British Museum. DESCRIPTION OF SOME NEW SPECIES OF THE CLASS MYRIAPODA; BY WILLIAM ELFORD LEACH, M. D. F. R. S. &c. HONORARY MEMBER OF THE PLYMOUTH INSTITUTION. JULUS. Julus Aucteram. Corpus elongatum; segmento ultimo abruptissimo acuminato. Antennæ sex articulatæ capitis pagina superiore inserta; articulo primo minimo; secundo subconico elongato; tertio paululum breviore, subconico latiore; quarto claviformi; quinto conico; sexto minutissimo cylindrico apice truncato. Pedes mediocres. Body elongated with the last segment very abruptly acuminated. Antennæ six jointed, inserted in the upper margin of the head, with the first joint minute; the second subconic elongated; the third a very little shorter, subconic, broader; the fourth club-shaped; the fifth conic; the sixth very minute, cylindric with the apex truncated. Feet moderately long. |