398 THE VARIATION OF ANIMALS IN NATURE 



Schroder, C. i 903a. Die Zeichnungs Variabilitat von Abraxas grossulariata. 



Allg. Zs. Ent., 8, 105-119, 145-157. i77-i94» 228-234, 2 plates, 100 figs. 

 Schubert, K. 1929. Die Odonaten der Umgegend von Neustadt O.-S. 



Zs. wiss. Ins. Biol., 24, 178-189. 

 Schweppenburg, H. G. von. 1 924. Anmerkungen zur Subspecies- 



frage . . . Zool. Jahrb. Abt. Syst., 49, 131-196. 

 Scott, A. 1909. Free-swimming . . . Copepoda. ' Siboga ' Expedn. 



Reports, XXIXa, 1-323, plates 1-69. 

 Scudder, S. H. 1889. The butterflies of the Eastern United States 



and Canada, II. Cambridge, Mass. 

 Seitz, A. 1894. Allgemeine Biologie der Schmetterlinge. Ill Teil. 



Fortpflanzung. Zool. Jahrb. Abt. Syst., 7, 823-851. 

 Semenov-Tian-Shansky, A. 19 10. Die taxonomischen Grenze der Art 



und ihrer Unterabteilungen. Berlin. 

 Sexton, E., Clark, A., and Spooner, G. M. 1930. Some new eye-colour 



changes in Gammarus chevreuxi. J. Mar. Biol. Assn., 17, 189-2 18, 1 plate. 

 1932. Some new colour-changes in Gammarus ... J. Mar. Biol. 



Assocn. Plymouth, 18, 3°7-33 6 - . . 



Sheldon, W. G. i 930- 1 93 1 . Notes on the nomenclature and variation of 



British species of the Peronea group of the Tortricidae. Entomologist, 



63, 121-124, 148-151, 175-178, 193-198, 222-225, 242-246, 273-277 ; 



64, 2-6, 30-34, 60-64, 77-82, 99~ io 3, 124-127, 1 P Iat e- 

 Shelford, V. E. 1907. Preliminary note on the distribution of the Tiger 



Beetles and its relation to plant succession. Biol. Bull., 14, 9-14-. 

 1909. Life histories and larval habits of the Tiger Beetles (Cicin- 



delidae). J. Linn. Soc. London, Zool., 30, i57~ l8 4- 

 Sikora, H. 191 7. Zur Kleiderlaus . . . Kopplausfrage. Arch. f. 



Schiffs- u. Tropenhygiene, 21, 275-284, 3 figs. 

 Silfrast, J. 1 922. Ueber die Beziehungen des Mutterhchen Orgamsmus 



zum Embryo . . . Klin. Monatsbl. Augenheilk., 69, 815. 

 Simpson, C. T. 1929. The Florida Tree Snails of the Genus Liguus. 



Proc. U.S. Nat. Mus., 73, art. 20, 1-144, 4 plates. 

 Smuts, J. C. 1926. Holism and Evolution. London. 

 Snodgrass, R. E. 1903. Notes on the anatomy of Geospiza, etc. The 



Auk, 20, 402-417, 4 plates. 

 Sonneborn, T. M. 1 93 1 . Macdougall's Lamarckian experiment. Amer. 



Nat., 65, 54i-550> 1 table. 

 Spengel, J. W. 1904. Ueber Schwimmblasen, Lungen unci Keimen- 



taschen der Wirbeltiere. Zool. Jahrb., Suppl., 7, 7 2 7~749- 

 Spooner, G. 1932. An experiment in breeding . . . Gammarus chevreuxi. 



J. Mar. Biol. Assocn. Plymouth, 18, 337-353. I fi S- 

 Standfuss, M. 1896. Handbuch der palaarktischen Gross-Schmetter- 



linge fur Forscher und Sammler. Jena. 

 !8g8. Experimented zoologische Studien . . . Neue Denks. allgem. 



Schweiz. Ges. Naturwiss., 36, 1-82, 5 plates. 

 Stelfox, A. W. 1930. Wasps' nests : their normal and some unusual 



situations. Irish Nat. J., 3, 98-101. 

 Stephenson, J. 1930. The Oligochaeta. Oxford. 

 Stephenson, T. A. 1929. On methods of reproduction as specific 



characters. J. Mar. Biol. Assocn. Plymouth, 16, 131-172, » figs. 

 Sternfeld, R. 1 9 i 3. Die Erscheinungen der Mimikry bei den Schlangen. 



Sitzber. Ges. naturforsch. Freunde, Berlin, 1913, g 8 " 1 ^, 4 fi S s - 

 Stockard, C, and Papanicolaou, G. 1916. A further analysis of the 



hereditary transmission of degeneracy ... by the descendants of 



alcoholized Mammals, II. Amer. Nat., 50, i44~ I 77> 6 fi g s - 



