1923] 
Recent Books 
35 
characters although perhaps only superficially similar. The 
median thoracic suture so pronounced in Dinapsis and Prodi- 
napsis occurs elsewhere, so far as I am aware, only in certain 
Ceraphronidse, Scelionidse and Belytidae of the Serphoid series 
where it may or may not be associated with the paired parap- 
sidal furrows, although a few Bethylidae and the Ampulicidae 
have a median pronotal (not mesonotal) furrow. In Megalyra 
it is prominent and undoubtedly homologous to the one in 
Dinapsis. 
Recent Books. 
In these lists are included titles relating entirely or directly 
to insects, as well as books in the related fields of biology which 
are of immediate interest to the Entomologist. 
Folsom, J. W. Entomology, with Special Reference to its 
Ecological Aspects, pp. 502, extensively illustrated. P. 
Blakiston’s Son & Co. Philadelphia, 1922. A third edition 
of this well known and useful text, containing much new 
material, and needing no introduction to American entomol- 
ogists. 
Parker, G . H. Taste, Smell and Allied Senses in the Ver- 
tebrates. pp. 192, illustrated. J. B. Lippincott Co., 
Philadelphia $2.50. Relates specifically to the vertebrates 
from the standpoint of both anatomy and physiology and 
presents material that the entomologist will find very useful. 
Rousseau, E. Les larves et nymphes aquatiques des in- 
SECTES d’Europe. vol. 1, pp. XX 967, 344 figures. J. 
Lebeque, Brussels. The first volume includes the Rhynchota 
neuropteroids and Trichoptera. A very complete and well 
illustrated compendium on the biology, morphology and 
classification of the aquatic members of these groups, with 
extensive bibliographical references. 
