Miall, L. C., and Denny, Alfred. The structure and life-history of the cockroach (Periplaneta orientalis). An introduction to the study of insects. 8º, pp. 224, London, 1886.
Cheshire, Frank R. Bees and bee-keeping. i, Scientific, London, 1886, Pls. and Figs.
Lang, Arnold. Text-book of comparative anatomy. i, pp. 426–508, 1891, many Figs.
Kolbe, H. J. Einführung in die Kenntniss der Insekten. 8º, pp. 709, 324 figs., Berlin, 1893.
Sharp, David. The Cambridge natural history. Insecta, i, 8º, pp. 83–584, 1895, Figs. 47–371.
Also the works of Bos, Chabrier, Cholodkowsky, Comstock, Dewitz, Eaton, Erichson, Gerstaecker, Girard, Grassi, Hagen, Haase, Kellogg, Knoch, Lacordaire, Latreille, Leuckart, Lendenfeld, Lowne, Lubbock, Mayer, Meinert, F. Müller, Osten-Sacken, Pagenstecher, Reinhard, Schaum, Schiödte, Scudder, J. B. Smith, Spinola, Stein, Weismann, Wood-Mason.
THE HEAD AND ITS APPENDAGES
a. The head
Fig. 24.—Presumed larva of Nemoptera (Necrophilus arenarius), Pyramids of Egypt.—After Roux, from Sharp.