464 EFFECT OF TEMPERATURE UPON FACET NUMBER 



Osterhout, W. J. V., /. Biol. Chem., 1917, xxxii, 23. 



Plough, H. H., /. Exp. ZooL, 1917-18, xxiv, 147. 



Roberts, E., /, Exp. ZooL, 1918-19, xxvii, 157. 



Rogers, C. G., Am. J. Physiol., 1911, xxviii, 81. 



Shelford, V. E., Color and color-pattern mechanism of tiger beetles, Illinois 



Biological Monographs, No. 4, 1917, iii, 1. 

 Snyder, C. D., Am. J. Physiol., 1911, xxviii, 167. 

 Sumner, F. B., J. Exp. ZooL, 1915, xviii, 325. 

 Tower, W. L., Carnegie Inst, of Washington, Pub. No. 48, 1906. 

 Trautz, M., and Volkmann, K. T., Z. physik. Chem., 1908, Ixiv, 53-60. 

 Vernon, H. M., PhiL Tr., 1895, clxxxvi, B 2, 577-627; Variation in animals and 



plants, London, 1903. 

 Woltereck, R., Verhandl. deutch. zool. Ges., 1910-11, 141. 

 Zeleny, C, Proc. Indiana Acad. Sc, 1917, 73. 



