No. 3.— The Gordiacea of certain American Collections with par- 
ticular Reference to the North American Fauna, By THOMAS 
H. MONTGOMERY, JR. 
Ir has been the intention of the author to pursue certain anatomical 
studies on Gordius and its allies, but this object could not be immedi- 
ately carried out owing to lack of material, and also to the difficulty 
encountered in determining the American species. Accordingly it seemed 
advisable to describe the American species systematically before entering 
upon an anatomical study of them. It is very apparent that the North 
American Fauna is very rich in species of Gordiacea, and yet the inves- 
tigation of these interesting forms has been almost wholly neglected 
by American zoölogists, Joseph Leidy being thus far almost our only 
writer upon them; and more species are known from South than from 
North America. 
The material for this study was mainly derived from three collections. 
The Leidy collection, which is the property of the University of Pennsyl- 
vania, is the richest of these, and contains some of Leidy’s types; my 
thanks are due to Dr. Charles W. Stiles of the Smithsonian Institution 
for having kindly forwarded this collection. I would express my obliga- 
tions to Dr. Alexander Agassiz for permission to examine the excellent 
collection of the Museum of Comparative Zodlogy at Harvard ; and to 
Dr. W. M. Woodworth for his trouble in sending me this collection. My 
thanks are further due to Dr. Stiles for specimens from his own and 
from the Smithsonian collection ; and for other specimens to the following 
gentlemen : Prof. E. G. Conklin, University of Pennsylvania ; Prof. Thos. 
H. Morgan, Bryn Mawr College; Mr. E. G. Vanatta, Academy of Natural 
Sciences, Philadelphia; and to Mr. Satterthwaite of Westtown, Pa. 
Further, I would express my thanks to the curators of the Academy 
of Natural Sciences, Philadelphia, for the opportunity to examine the 
specimens in this collection. In a previous paper, to appear in April, 
1898, in Spengel’s “ Zool. Jahrbiicher,” I described two new exotic spe- 
cies from American collections, 
VOL. XXXII. — NO. 8, 1 
