1950 394 p., 1 plate, numerous text figures. Publisher's embossed cloth with gilt title on the spine and gilt vignette on the front board. The Ray Society.This part, published 11 years after the first, which is not included, deals with Colymbetini to Orectochilus. But, as the writer put it "It is perhaps unfortunate that this volume should be entitled 'British Water Beetles', since it contains many facts which will be useful to theoretical biologist even if such biologists do not agree with my interpretations of these facts". Stamp on front pastedown, otherwise a very good clean copy.
1958 liii, 210 p., 87 figs, 67 maps, publisher’s cloth. Library stamps, else good copy.
London, New York and Bombay Longmans, Green, and Co 1905 in-8 toile bleue foncée [Rel. de l'éditeur]
2 ff.n.ch., 238 pp. et 40 pp. (catalogue de l'éditeur).Edition originale
"0. Bruxelles, Institut des Parcs Nationaux du Congo Belge, 1950, lg in-8° 28 x 18 cm, 84 pp, 22 ills., index, sewn, orig. printed wrapper, unopened pages, ex-library stamp. Text in English. Publ. in the series ""I'Exploration du Parc National Albert, Mission G. F. De Witte (1933-1935)"", fascicule 63."