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BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

In the present paper the morphodynamics of sand waves in the Messina Strait, Italy, is analysed by comparing data gathered during two different surveys carried out in 1991 and 2001, respectively. In particular, a morphometric analysis on the most recent data and a qualitative analysis of the differences between bottom bedform patterns, are carried out. At locations characterised by greater depths, only minor changes to the planimetric configuration of the field, i.e. crest orientation (which is seen to be orthogonal to the direction of net gross sand transport) and wave length are observed, while differences in wave length and crest direction are more evident in more shallow areas. On the other hand, wave height has significantly increased in the whole field. A possible explanation of such a change, based on the previsions of a theory which relates sand-wave growth and migration to the main components of the tidal ellipse, is provided.

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A new species of a troglobitic Pselaphinae is described. Tychobythinus molarensis sp. n. has shown many adaptations to cave life: wingless and anophthalmous, very elongated legs and antennae. The new species differs from others related taxa in different arrangement of some characters of external morphology, especially the shape of profemora and protibiae of male, and for the peculiar morphology of aedeagus. The new species up to now is known only from Molara Cave, a single limestone cave of the north‐western Sicily. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)