1979] 
Brady — Spider Genus Trochosa 
175 
Massachusetts, the American Museum of Natural History, New 
York City, and the Canadian National Collection, Ottawa, Canada. 
I wish to thank sincerely the curators of these collections, Dr. H. W. 
Levi, Dr. N. I. Platnick, and Dr. C. D. Dondale respectively, for the 
use of these materials. The study of type specimens on loan from the 
Museum of Comparative Zoology and the American Museum was 
an essential part of this investigation. 
Special thanks are extended to Dr. C. D. Dondale who kindly 
consented to review the manuscript and offered constructive criti¬ 
cism and friendly advice. Thanks also go to Dr. J. Reiskind who 
supplied important specimens from the University of Florida collec¬ 
tion. Dr. Torbjorn Kronestedt sent critical European specimens for 
examination and supplied information about the syntypes of Tro¬ 
chosa terricola Thorell. I am grateful to Mr. F. R. Wanless for 
sending specimens of Trochosa avara Keyserling from the L. Koch 
collection maintained in the British Museum (Natural History). 
Finally a word of appreciation and recognition is given to Dr. W. 
J. Gertsch, Dr. H. K. Wallace, the late Dr. A. M. Chickering, and 
the late Mr. W. Ivie for their efforts in collecting many of the 
specimens examined. 
Initial support was provided during the summers of 1975 and 
1976 by the Andrew W. Mellon Foundation under the program for 
faculty development at Hope College. National Science Foundation 
grant DEB-7803561 helped defray expenses of this investigation. 
Key to Females 
la. Posterior margin of cheliceral fang furrow with three teeth .. 
. 2 
lb. Posterior margin of cheliceral fang furrow with two teeth 
. terricola 
2a. Longitudinal piece of median septum of epigynum narrow, 
with lateral ends of transverse piece directed anteriad (Figs. 8, 
9, 18, 20, 21, 23, 25, 27) 3 
2b. Longitudinal piece of median septum of epigynum broad, with 
transverse piece straight (Figs. 10, 13, 14, 16) .. terricola 
3a. Longitudinal piece of median septum with blunt, posterior 
median process and with lateral ends of transverse piece 
extending only slightly anteriad (Figs. 20, 21). Eastern United 
States (Map 2) avara 
