6 NEW YORK STATE MUSEUM 
ACKNOWLEDGMENTS 
The chief source of materials has been the splendid collection of 
the department of entomology at Cornell University, which was 
placed unreservedly at my disposal through the kindness of Profes- 
sor C. R. Crosby. I am also particularly indebted to Professor 
Crosby for his continued interest in this report and critical exami- 
nation of the manuscript. For the use of the valuable series of 
specimens in the Museum of Comparative Zoology at Cambridge, 
my thanks are due Dr R. V. Chamberlin, Mr Samuel Henshaw 
and Mr Nathan Banks. Dr F. E. Lutz of the American Museum, 
New York, Dr. J. M. Aldrich and Mr H. E. Ewing of the National 
Museum and Dr Eugene A. Smith of the University of Alabama 
kindly loaned the specimens placed in their care. Smaller collections 
have been received from Mr J. H. Emerton of Boston, Dr Frank N. 
Blanchard of the University of Michigan, Dr Charles P. Alexander 
of the Massachusetts Agricultural College, Dr S. J. Hunter of the 
University of Kansas and Mr William Barrows of the Ohio Biologi- 
cal Survey. Dr A. H. Wright and Mr Francis Harper of the depart- 
ment of zoology, Cornell University, collected and contributed a 
valuable series of Dolomedes from the Okefinokee swamp, Georgia. 
The private collection of Mr C. R. Shoemaker of Washington, D. C., 
is rich in pisaurid material collected chiefly in the District of 
Columbia and Virginia. Dr L. Berland and M. Eugene Simon of 
the National Museum of France sent to me for examination the type, 
and at the time, the only known specimen of Maypacius 
floridanus. My own collections have been made chiefly in 
various parts of New York State and Georgia, and the specimens 
are deposited in the New York State Museum. My former assistant, 
Miss Fanny T. Hartman, and local collectors, Mr W. J. Schoon- 
maker of Rensselaer and Mr Hugh P. Chrisp of Albany, have con- 
tributed valuable specimens and observations. 
My thanks are also due Professor J. H. Comstock for permission 
to use the splendid photograph of Pisaurina mira on her 
nursery. 
With two exceptions, the drawings accompanying the report are 
the work of Anna Clegg Stryke of Pasadena, Calif., who is not only 
an artist of exceptional ability but an accomplished student of 
aranean anatomy. 
