1891 (2nd ed.) xi, 236 p., 11 plates. Original embossed brown cloth (spine missing). Bookplate on front paste-down, library stamp on title page. Top of spine taped and with a few worm-holes. Working copy onlyThis double titled publication is an "update" after the original series of hymenopterological catalogues of the British Museum collection which were published more than 20 years earlier. This part is the only one published and deals with bees only. 211 species are described and figured. List of British Museum publications bound in the rear. 
1853-1859 Seven parts in three. 1254 p., 41 plates, small 8vo, contemporary uniform grained half calf. Gilt title on spines. An average (working) copy at best, as the bindings are crudely taped, some boards detached and show signs of worming (in need of rebinding) and most plates are foxed, paper generally a bit age-toned. Rare.With descriptions of new species. It is from the series edited by John Edward Gray and aimed at providing a complete catalogue of the Museum's holdings. The set is as follows: I. Andrenidae and Apidae (1853) 197 p., 6 plates, II. Apidae [continued] (1854) pp. [198]-465, 6 plates, III. Mutillidae and Pompilidae (1855) 206 p., 5 plates, IV. Sphegidae, Larridae, and Crabronidae (1856) pp. [207]-497, 6 plates, V. Vespidae (1857) 147 p., 6 plates, VI. Formicidae (1858) 216 p., 14 plates, VII. Dorylidae and Thynnidae (1859) 76 p., 3 plates. The present set should not be confused with F. Walker's list of hymenopterous insects in the collection of the British Museum, which preceded this work. An average (working) copy at best, as the bindings are crudely taped, some boards detached and show signs of worming (in need of rebinding) and most plates are foxed, paper generally a bit age-toned. Rare.
1854 267 p., paperbound (plain blue covers as issued). Without the 6 plates.
1857 147, 8 p., paperbound (plain blue covers as issued).
1857 147, 8 p., paperbound (plain blue covers as issued). Back broken.
1879 xxi, 240 p., cloth.
1853 [2], 74 p., paperbound (plain blue covers as issued).
1853 [2], 74 p., paperbound (plain blue covers as issued, edges chipped). Interleaved copy.
1851 [2], 134 p., paperbound (plain blue covers as issued, very small chip out of front cover). 
1853-1859 465, 497, 147, 216, 76 p., 12, 11, 6, 14, 3 pls, small 8vo, paperbound (original blue covers, a little chipped at places plates volume 6 loose). A few blind-stamps and on verso-side of front cover a Worcester Public Library sheet is pasted. Plates of volume 5 with a small waterstain in blank lower corner, plates volumes 6-7 with waterstain.
1894 Two parts in two. 136, 9 p., small 4to, disbound (no covers). Unopened. With the descriptions of many new species. Published in: Novitates Zoologicae.
1928 104 p., 63 figs, paperbound. University of California Publications, Entomology. Library stamp on front cover.
1976 [6], 249 p., 92 figures, paperbound. Library stamps, else good copy.
1895 126 p., 14 plates, slightly later half calf over marbled boards. Original printed wrappers bound in.An important and well-illustrated revision with some new species. Boards rubbed, joints weak, starting. Bookplate on front paste-down.
1986 287 p., 402 figures, cloth. Library stamps, else a very good copy.
1973 xiv, 561 p., 217 figures, 12 (2 coloured) plates, 4to, hardbound (dust jacket). Library stamps, else good copy.
1962 72 p., 75 figs, paperbound. Published in: Transactions of the Royal Entomological Society of London. Very good copy.We added: Smith, The biology and taxonomy of the genus Stylogaster in the Ethiopian asn Malagasy regions (23 p., 77 figs).
1967 [4], 174 p., 4 pls, paperbound. Library stamp. 
1967 [4], 174 p., 4 pls, cloth. University of California Publications, Entomology. Library stamp. With author’s dedication to Dr. J.T. Wiebes.
1967 84 p., 122 figs, 10 col. pls (with figs 123-201), 4to, paperbound. Entomology Memoir No. 85 Agricultural Research Council.
2010 159 p., 452 (many coloured) figures, 4 coloured plates, paperbound. Entomologische Tabellen.
2010 159 p., 452 (many coloured) figures, 4 coloured plates, paperbound. Entomologische Tabellen.
1908 (2nd ed.) xvi, 338 p., 9 figs, cloth. Library stamps, else good copy. Ex library Dr. J.G. Betrem (with his ex libris/bookplate).
1986 in-8, broché thèse, 139 pp., nombreuses figures in-texte, couverture jaune illustrée. Très bon état,