2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



phase of the subject, as classification, morphology, life history, 

 ecology, coloration, etc., and includes a complete bibliography under 

 each species. 



• The present paper is a revision and an addition to work done in 

 1916 at the University of Illinois for a Masters Thesis. As pre- 

 sented at that time it consisted solely of the part on the classification 

 of the larvae. The work was done under the direction of Prof. 

 A. D. MacGillivray who gave many helpful suggestions and criti- 

 cisms. 



A study of the larvae was made possible through the opportunity 

 for the purchase of a collection of determined material from Dr. 

 V. E. Shelford and, unless otherwise stated, the larvae were col- 

 lected and reared by him. He also permitted me to use his unpub- 

 lished notes and gave numerous suggestions on the habits of the 

 larvae. I am indebted to Prof. S. A. Forbes and the Graduate 

 School of the University of Illinois for securing this collection. 



The scope of the paper was considerably extended through the 

 opportunity to study a collection of larvae of the genus Ovius^ 

 together with some additional larvae of the genus Culndela, sent 

 to Prof. A. D. MacGillivray by Dr. F. E. Blaisdell, sr., of the 

 Leland Stanford Junior University Medical School. Larvae of 

 Amhlychila cylindriforTiiis were secured through the courtesy of 

 Prof. S. J. Hunter, of the Department of Entomology, University 

 of Kansas. 



From 1916 until 1922 little was done on the paper except the 

 occasional collection of larvae. It was then decided to include the 

 morphology of the larvae and add to the classification a number 

 of additional species in the collection of the United States National 

 Museum. Thanks are due Dr. L. O. Howard, Honorary Curator, 

 Division of Insects, for permission to study this material and to 

 Dr. Adam Boving, of the Bureau of Entomology, for assistance on 

 the morphology. The entire larval material in the museum has 

 been studied and revised; 17 undetermined or wrongly determined 

 species have been named. Three species not represented in the col- 

 lection have been given to the United States National Museum by 

 the author. Acknowledgments are expressed to the Agricultural Ex- 

 periment Station of the University of Maryland for the time used 

 in revising this paper. 



All drawings have been made by the author. Charles Leng's 

 Catalogue of the Coleoptera of America North of Mexico, 1920 

 edition, has been followed in the nomenclature. 



MORPHOLOGY OF THE LARVA. 



The larvae of the Cicindelidae (figs. 1 to 4) are long, cylindrical, 

 and grub-like and normally live in burrows in the soil. Some of 



