No. 39] ODONATA OF CONNECTICUT : GLOSSARY 305 



Tibial setae: Setae on the tibiae. 



Triangle: A triangular cell in the wing base formed by cubitus and 

 two converging cross-veins between M* and Cui. 



Trochanters: The second and third segments of the leg in dragon- 

 flies; usually short and closely united. 



Trochantins: Small sclerites at the base of an appendage. 



Truncate: Cut off squarely at tip. 



Venter: The lower surface of the whole body or of a division of the 

 body. 



Ventro- meson : Intersection of the meson with the ventral surface. 



Vertex: An indefinite area on the dorsum of the head, next the front 

 and between the compound eyes. 



Vitta: A longitudinal colored line or stripe. 



Vulvar lamina: Reduced gonapophyses of the female usually con- 

 sisting of two small plates, one on each side of the vaginal 

 opening. 



Vulvar spine: Spine on venter of abdomen immediately in front of 

 the ovipositor or vulvar lamina. 



Wing-cases: Envelopes enclosing the wings in the nymphs of 

 dragonflies. 



Acknowledgments 



Many persons have aided materially in the preparation of the 

 manuscript, and I w^ish to express here my grateful appreciation of 

 their assistance. I am especially indebted to Drs. W. E. Britton, 

 P. P. Calvert, R. H. Howe, and Mr. William T. Davis; and to 

 my co-workers, Messrs. B. H. Walden and M. P. Zappe. Thanks 

 are also due to Dr. H. Garman, Mr, C. W. Johnson and Messrs. 

 C. S. Brimley, S. W. Bromley and Professor J. A, Manter for 

 supplying material for study. To Mr. Nathan Banks and Mr. 

 C. W. Johnson, I also wish to express my thanks for the privilege 

 of examining the dragonflies in the Cambridge Museum of Com- 

 parative Zoology and the Boston Society of Natural History, and 

 to Dr. Lutz and Mr. Mutchler for permission to examine speci- 

 mens in the American Museum of Natural History. Specimens 

 in the U. S. National Museum and in the Yale collection of insects 

 have also been examined through the kindness of Mr. S. A. 

 Rohwer and Professor W. R. Coe, and fossil dragonflies in the 

 Yale Peabody Museum have been examined through the courtesy 

 of Professor Charles Schuchert. Dragonflies in the Philadelphia 

 Academy of Sciences were made accessible by the late Dr. Skinner, 

 and all Odonata mentioned as belonging to the collection of Dr. 

 Calvert are deposited in that museum. 



