Peculiarities of real shallow sea wave-guide vortex structure.

The temporal vector-phase characteristics of the interference field of a low-frequency signal tone in a real wave-guide of shallow sea were taken under consideration. Physical objects were detected in the field of destructive interference, which, according to known features, are defined as local vortices of the intensity vector. "Static" vortices and vortices that perform periodic oscillatory motions in the direction along the axis of the wave-guide relative to the phase centre of the combined receiving device have been discovered.

Cossidae (Lepidoptera) of the Russian Caucasus with the description of a new species.

An annotated list of the Cossidae of the Russian portion of the Caucasus including 20 species from 11 genera and two subfamilies is presented for the first time. A new species Cryptoholcocerus daghestanica sp. nov.