146 SEVENTEENTH Report State ENtTomoLocist or MinnNesota—l918 
below. Mr. Warren Williamson, of this department, was of material 
assistance in compiling material in the early part of the work. 
We wish to acknowledge also material assistance in identifica- 
tion of specimens afforded by S. A. Rohwer and associates, Dr. W. M. 
Wheeler, Dri J. Chester Bradley, Dr. H» IT. Fernald, and Dr- ai 
Swenk. Dr. H. J. Franklin identified most of the Bombids and species 
in a few other groups. Dr. Headlee, of the New Jersey Station, kindly 
loaned certain cuts previously used in a New Jersey report, Howard’s 
Insect Book and in Insect Life. C. W. Hooker identified our Ophion- 
int. 
To serve students of Hymenoptera, a brief technical description 
of each family is inserted and in explanation of same, descriptive fig- 
ures used in “The Hymenoptera or Wasp-like Insects of Connecticut’’* 
are printed herewith. 
We have not hesitated to use technical matter from the Connecti- 
cut volume wherever it was thought that it would be helpful, believ- 
ing it to be the best work on the subject up to the date of its publica- 
tion. Subsequent to that time, a certain amount of hymenopterous 
literature has appeared, which has thrown additional light on classi- 
fication and caused us to depart somewhat from the plan followed in 
the Connecticut volume. The changes referred to will be apparent 
to the student. 
It is believed that with the brief technical synopsis, introducing 
each family and the figures above alluded to for reference, there is no 
pressing need of a synoptical key or a glossary. 
THE MINNESOTA COLLECTION 
Experts in Hymenoptera pronounce our collection one of the best 
in the country outside of some of the larger eastern collections, and 
that of the Federal Bureau. Dr. Lugger, however, habitually neglected 
to place locality labels with his specimens. While he probably knew 
personally exactly where each specimen was collected, he did not appear 
to be impressed with the necessity of leaving a record for those who 
came after him. The result is that we have very many species in the 
collection, without doubt to be credited to Minnesota, which neverthe- 
less we hesitate to include in our faunal list. Many of the boxes in 
the Lugger collection are filled with specimens undoubtedly taken here, 
*State of Connecticut State Geographical and Natural History Survey Bulletin 
No. 22, Guide to the Insects of Connecticut, prepared under direction of W. E. Brit- 
ton, State Entomologist, by H. L. Viereck with the collaboration of A. D. MacGillivray, 
Cc. T. Brues, W. M. Wheeler and S. A. Rohwer. 
