254 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Walsingham. 
'85. On some probable Causes of a Tendency to melanie Variation in 
Lepidoptera of high Latitudes. Trans. Yorkshire Union, pt. 5, p. 113-140. 
Cf. Nature, Vol. 31, p. 505. 
Watkins, W. 
91. Ornithoptera trojana, Staudinger. Entomologist, Vol. 24, p. 178-179, 
pl. 4. 
Weismann, A. 
'82. Studies in the Theory of Descent. ‘Translated and edited by Raphael 
Meldola. London, 2 Vols., 28 + 729 pp., 8 pls. [p. 1-158.] 
Weymer, G. 
75. Exotische Lepidopteren. Stettiner Ent. Zeit., Jahrg. 36, p. 368-385, 
Taf. 1-2. 
Weymer, G. 
84. Exotische Lepidopteren. II. Stettiner Ent. Zeit., Jahrg. 45, p. 7-28, 
Taf. 1-2. 
