MAYER: COLOR A NO COLOR-PATTERNS. 
329 
TABLE OF CONTENTS. 
PART A. 
General Phenomena of Color in Lepidoptera. 
I. Classification of Colors. 
Page 
(1) Pigmental Colors 243 
(2) Structural Colors.244 
(3) Combination Colors.245 
(4) Quantitative Determination of Pigmental Colors .... 246 
(5) Spectrum Analysis of Colors of Lepidoptera.247 
(6) Summary of Results.248 
II. The essential Nature of Pigmental Color in Lepidoptera. 
(1) Pigments of Larvae .......... 248 
(2) Pigments of Imagines.249 
III. Development of the various Colors in the Pupal Wings. 
(1) Historical Account of previous Researches ..... 250 
(2) Development of Color in the Pupal Wings of Callosamia promethea 252 
(3) Development of Color in the Pupal Wings of Danais plexippus 
(archippus). 254 
IV. The Laws which govern the Color-Patterns of Butterflies and 
Moths. 
(1) Historical Account of previous Researches.255 
(2) Laws of Coior-Patterns.257 
(3) Detailed Discussion of the Laws of Color-Patterns . . . 259 
(4) Origin of Color-Variations.263 
Bibliography of Color-Aberrations ..... 264 
(5) Climate and Melanism.264 
(6) Relation between Climate and Colors of Papilios .... 265 
V. The Causes which have led to the Development and Preservation 
of the Scales of the Lepidoptera. 
(1) Experiments and Theory ........ 266 
(2) Summary of Conclusions.271 
PART B. 
Color-Variations in the Heliconidae. 
I. General Causes which determine Coloration in the Heliconidae. 
II. Methods pursued in studying the Color-Patterns of the 
Heliconidae. 
(1) The Two Types of Coloration in the Danaoid Heliconidae 278 
(2) Detailed Description of the Melinaea Type of Coloration 279 
