CONTENTS. 



Page 



PART 1- INTRODUCTORY CONSIDERATIONS 



Principles of classification 4 



Structure of pigmented areas 6 



Development of pigmented areas 



Utility of the color-pattern 9 



Life and habits 10 



Variation and heredity of body-length 13 



Acknowledgments 14 



PART II. THE DATA ARRANGED BY SPECIES 15 



Hippodamini 15 



Anisosticta 15 



strigata 15 



Naemia 15 



seriata 15 



Nacronaemia 16 



episcopalis 16 



Paranaemia 16 



vittigera 16 



Megilla 16 



maculata 16 



Ceratomegilla 17 



ulkei 17 



Eriopsis 17 



connexa 17 



Hippodamia 1" 



glacialis 19 



convergens 21 



bowditchi 45 



spuria 46 



oregonensis 48 



cockerelli 49 



dispar 50 



sinuata 50 



tredecimpunctata 50 



americana 52 



parenthesis 52 



apicalis 54 



lengi 54 



falcigera 55 



Coccinellini 56 



Neoharmonia 56 



venusta 56 



notulata 56 



ampla 56 



iii 



