148 
Psyche 
[June 
about 3.5 mm. long, near the base, and only about 5 mm. 
of their tarsi black. 
Type in the collection of Dr. C. P. Alexander who con- 
firms the species as new, and cites the following as the 
closest allied : T. pedata Wied., T. fuscitarsis Edw., T. tinc- 
tipes Edw., T. micrantha Alex., T. scimitar Alex., T. venusta 
Walk. From all of these it differs in the combination of leg 
pattern and coloration of body and wings. 
BOOK NOTICES 
A Handbook of the Dragonflies of North America. By 
J. G. Needham and H. B. Heywood. vi + 368 pp., with 
many figures and diagrams. Charles Thomas, Spring- 
field, Illinois. $7.00. 
The scattered literature relating to North American 
Odonata has been gathered together, digested and presented 
with a large amount of new material in the present book. 
The introduction of about fifty pages includes a short ac- 
count of structure and habits and the remainder is a very 
complete taxonomic treatment, including keys, of the adults 
and nymphs so far as the latter are known. This is a “hand- 
book’ ’ in the full sense of the word, and with its list of 
literature should serve as a complete guide to the field with 
which it deals. 
C. T. Brues. 
The Problems of Applied Entomology. By R. A. Wardle. 
vii + 587 pp., 31 figures. McGraw-Hill Book Co., New 
York. $6.00. 
After the extensive series of text books on insects that 
have been published during the past few decades, it would 
seem that no actually new and unique treatment of any 
extensive entomological field could be expected. Professor 
Wardle has shown that such is not the case, and has worked 
