S. CONTARDI and S. CASATI

Abstract

title SUMMARY /title The digital edition of the renowned and rare RACCOLTA and Nuova raccolta d'opuscoli scientifici e filologici, is an important step in the Digital Library project, recently initiated by the Institute and Museum of the History of Science in Florence. The periodical edited by Angelo Calogera can now be consulted at the Institute's web site.

S. S. M. Kaiser

Based on benthic material collected during the BIOPEARL (Biodiversity, Phylogeny, Evolution and Adaptive Radiation of Life in Antarctica) II expedition on board RRS “James Clark Ross” a new nannoniscid species, Regabellator brixorum sp. n., is described from the Pine Island Bay continental shelf, western Amundsen Sea (Antarctica). The new species most closely resembles Regabellator armatus (Hansen, 1916) but can be distinguished from this species by possessing ventral spines on pereonites 1-4, the shape of the cephalothorax anterior margin and the length of the pereonite 7 ventral spine. The genus Regabellator has been previously recorded from the North and South-eastern Atlantic and here exclusively from the deep sea (1946 m and below). The new species represents the first record of the genus Regabellator from the Antarctic continental shelf and thus greatly extends hitherto known latitudinal and bathymetric ranges for this genus.