1904 (reprint 1968) xvii, 760 p., 440 figs, cloth. Good copy.
1918 xii, 626 p., 293 figs, original green cloth.
1909 (reprint 1968) xviii, 566 p., 287 figs, cloth. The Crustacea section (pp. 1-217) written by G. Smith & W.F.R. Weldon.
1896 (reprint 1968) xii, 560 p., 257 figs, green cloth. The Polychaeta section (pp. 241-346) written by W.B. Benham.
1896 (reprint 1968) xii, 560 p., 257 figs, green cloth. The Polychaeta section (pp. 241-346) written by W.B. Benham.
1909 xviii, 566 p., 287 figs, cloth. The Crustacea section (pp. 1-217) written by G. Smith & W.F.R. Weldon. Ex library F. Yarrelman (with his stamp) and Charles A. Kofoid (with his signature).