THE BRITISH CADDIS FLIES (TRICHOPTERA): A COLLECTOR'S HANDBOOK. By Martin E. Mosely, F.R.E.S., F.Z.S. With an introduction by N.D. Riley, F.R.E.S., F.Z.S. Illustrated by D.E. Kimmins.

1939 1st edition. Large 8vo (165 x 250mm). Ppxiv,320. B/w photographs, b/w illustrations by D.E. Kimmins. Dark blue buckram, spine titled in gilt.

"...not an exhaustive monograph but rather a handbook by means of which collectors may identify their captures and thereby complete a knowledge of the fauna of their districts. The classification of the Trichoptera is based on neuration and the structure of the genitalia rather than on wing-markings, and consequently the author has relied upon figures of those characteristics, numbering no fewer than 633, with three plates reproduced from photographs from nature".