No. 6 HEMOLYMPH COAGULATION IN INSECTS—GREGOIRE 33 
dae (pattern IV), Staphylinidae (pattern IV), Scarabaeidae (pattern 
II, with the exception of Coprinae: patterns I and III), Heteromera 
(patterns I and/or III), Cerambycidae (pattern I), Curculionidae 
(pattern IV), and in a few genera reported in the table; (5) in Lepi- 
doptera (larvae), predominance of pattern II, with the possible ex- 
ception of Saturniidae (pattern III); (6) in Hymenoptera, occur- 
rence of patterns I and III in several taxonomic groups, in Apidae, 
scarce coagulation or absence of plasma reaction. 
ACKNOWLEDGMENTS 
I am greatly indebted to James Zetek, former Resident Manager 
of the Canal Zone Biological Area, and Mrs. A. Gomez, secretary 
at the station, who did everything possible to facilitate my work dur- 
ing my stay at the laboratory on Barro Colorado Island. I acknowl- 
edge with sincere appreciation the assistance of Paul Swift, chief of 
the Eastman Kodak Tropical Research Laboratory, Panama City, who 
developed the photographic plates, and Messrs. Bocanegra and Ruiz 
who supplied me with several specimens. 
I wish to thank Dr. Remington Kellogg, Director of the United 
States National Museum and Dr. Waldo L. Schmitt, Head Curator 
of the Department of Zoology, for authorization to have the material 
determined in the Museum, and to express my gratitude to the fol- 
lowing for identification of the specimens: Dr. M. Beier, Dr. R. E. 
Blackwelder, O. L. Cartwright, Prof. L. Chopard, G. Fagel, Prof. 
W. D. Hincks, Ch. Jeuniaux, K. V. Krombein, M. N. Magis, C. F. W. 
Muesebeck, Miss S. Parfin, Miss L. Russell, Dr. R. I. Sailer, Dr. 
M. W. Sanderson, Dr. M. R. Smith, Dr. Thomas E. Snyder, T. J. 
Spilman, Geo. B. Vogt, Miss R. E. Warner, Dr. N. Weber, Dr. C. 
Willemse, Dr. W. W. Wirth, and Dr. D. A. Young. Special thanks 
are due O. L. Cartwright, Acting Curator of the Division of Insects, 
United States National Museum, for collecting and mailing the data; 
Dr. J. Leclercq for much information about taxonomic problems 
related to the present paper; and the Patrimoine de l’Université de 
Liége, for defraying the expenses of shipment of the microscope and 
equipment used in the present studies. 
