Paris, Dentu, 1805. 8vo (21.9 x 14.6 cm). vii, 88 pp.; one very large, multi-folded table; 9 engraved plates. Later blind blue wrappers.

First edition of this important contribution to the taxonomy of spiders. Written by the French entomologist Baron Charles Athanasie Walckenaer (1771-1852). Includes the descriptions of many new species, from as far away as Australia. Some light, scattered foxing. The plates cut at edges, resulting in three figures (no.'s 45, 48, 63), and two plate numbers being shaved. The large synoptic table, however, in very good condition. Bonnet, p. 624; Cat. BM(NH) p. 2252; Nissen ZBI, 4318. Neither in Hagen, nor in Horn-Schenkling (apparently for not being on "true" insects).