**250 copies** The aural pleasure created by this somewhat mysterious trio of London musicians continues to accrue. After two fine self-released records (one a 7", the other a 12"), and the superb Drip Water Hollow Out Stone on the great Ever/Never label, Feeding Tube is honored to present the Mosquitoes' latest assault on the temples of beauty.The music on Vortex is of a piece with earlier recordings. By this, I mean there is a wonderfully 'out' approach to basic rock instrumentation and vocals…