DOUBLE NUMBER 



VOL. XXXVII DECEMBER, 1921 Nos. I & 2 



JOURNAL 



OF THE 



Elisha Mitchell Scientific Society 



CONTENTS 



Proceedings of the Elisha Mitchell Scientific Society, 

 j^ February, 1921, to May, 1921 i 



Proceedings of the Twentieth Annual Meeting of the 



North Carolina Academy of Science 6 



John Francis Lanneau, 1836-1921 ..17 



The Age of Insects. Z. P. Metcalf 19 



The Genus Raspailia and the Independent Variability of 

 Diagnostic Features, H. V. Wilson 54 



An Interesting Maximal Case. Archibald Henderson and 

 H. G. Baity 61 



Key to the Butterflies of North Carolina. C. S. Brimley. . . 73 



A Theorem on Double Points in Involution. /. W. Lasley, Jr.. 80 



The C0LLYBLA.S of North Carolina. W. C. Coker and 

 H. C. Beardslee 83 



Abstracts and Reviews 108 



ISSUED QUARTEBLT 



CHAPEL HILL, N. C, U. S. A. 



ENTERED AT THE POST OFFICE AS SECOND-CLASS MATTER 



