August, ’20] 
REVIEWS 
373 
field the determination of the effect of these parasites on the abundance 
and the periodical outbreaks of the host. With this idea in view he 
had made an exhaustive study of the factors bearing upon the rate of 
multiplication of the insect, a summary of which will soon appear in 
print. 
Professor McConnell was the possessor of a broad, thorough training 
in zoology and general natural history, which permitted him to ap¬ 
proach his problems in a big way. He was an indefatigable worker, 
and most deeply interested in his work. This led to the overdraft of 
his reserve powers, already reduced by previous illness, and there is no 
doubt in the minds of his associates that his life was sacrificed to ento¬ 
mological research. 
Professor McConnell was a member of the Entomological Society of 
America, the American Association of Economic Entomology, the 
American Association for the Advancement of Science, and the Ento¬ 
mological Society of France. W. R W. 
Reviews 
Orthoptera of Northeastern America with Especial Reference to the 
Faunas of Indiana and Florida. By W. S. Blatchley. The 
Nature Publishing Company, Indianapolis, 784 pages, 246 text 
figures and 7 plates, with bibliography, glossary and index, 1920. 
As stated by the author, this book has been prepared to supply the long-felt need 
of a single comprehensive manual on the Orthoptera inhabiting the United States east 
of the Mississippi River and Canada east of the 90th Meridian. Hitherto the student 
working in this group has been compelled to resort to a large number of special pub¬ 
lications—many of them out of print or difficult to obtain—in order to get the de¬ 
scriptions to enable him to determine the species he may have collected or the informa¬ 
tion he may have desired regarding their habits or distribution. During the last two 
decades, as a result of the extensive investigations of Rehn and Hebard, Caudell, 
Morse, Davis and other workers, most of the problems connected with the nomen¬ 
clature of the group have been cleared up and the limits of the different species, with 
few exceptions, clearly defined. There seems to be every reason to believe that the 
vast majority, if not all, of the Orthoptera of the Eastern States are now known, and 
one can therefore heartily agree with the author when he states that he deems the 
time propitious for the appearance of a work of this kind. 
The present work is an outgrowth or expansion of the authors’ earlier work, “Orthop¬ 
tera of Indiana,” issued in 1903. In the preparation of the book the author states 
that he has “ever had in mind the needs of the tyro and not those of the specialist 
in Orthoptera, the primary object in view being a simple work which would enable 
beginners in the most direct way possible to determine the scientific names and ar¬ 
range and classify the Orthoptera in their collections.” For this reason keys “based 
on the more salient or easily-recognizable characters separating the divisions to which 
they pertain” have been made an important feature of the book. In the judgment 
of the reviewer the book is admirably adapted for this pupose. It puts for the first 
time at the disposal of those who are not specialists in Orthopteran taxonomy the 
means for ascertaining the species of Orthoptera with which they may happen to be 
