REVIEWS AND BOOK NOTICES. 
Entomotocy IN Missouri. *— Not only is this report of much 
interest to the farmers and gardeners of the State of Missouri, 
but naturalists-will glean from its pages some facts new to sci- 
ence. We may congratulate the citizens of Missouri on the 
publication of an official report, which is of a high economical 
interest, and is an estimable contribution to science. And while 
thrifty habits are suggested, many a farmer’s boy is acquiring an 
interest in insects and their ways, that will surely lead him to 
observe facts for himself in after life. His judgment will thus be 
trained, and he will be a bette? farm- 
er and a more trustworthy citizen. 
Hence these reports have a distinc- 
tive educational and moral bearing 
on the citizens of the state in which 
Fig. 115. 
idea of the thoroughly good scien- 
tific work done by Mr. Riley in his 
primary attempt at enlisting the in- 
terest of agriculturists in observing 
and restraining injurious insects. 
fter some preliminary remarks 
on insects and economic entomolo ogy, 
With some views on classification to which we cannot give our as- 
sent,t several pages follow on the mode of collecting and preserv- 
ing insects, with full illustrations. 
Pimpla, parasite of Codling Moth. 
*Fifth Annual Report on the Noxious, Beneficial and other Insects of the State of 
Misso ouri, made to the State Board of saang e. By C. V. Riley, State Entomologist. 
Jefferson City, 1873.  8vo, pp. 160. With 
t For example, Rolleston was by no means oii first to divide Articulata into Arthro- 
and Vermes; it was done by Siebold in 1848, long before his work appeared. 
As morphology indicates by the presence of four pairs of jointed appendages in the 
head, oa embryology demonstrates by their early presence four rings in the head, 
wae rs definition whole truth. He 
oon y 17-jointed, or 14-jointed, counting the head as one, in a popular report of 
this sort. Four rings can be demonstrated in the head of an insect as easily as that 
a a flower are modified leaves. Mr. Riley also takes a back step in classifica- 
Separating the Strepsiptera from the Coleoptera, sae 098 from the Diptera, an 
= Thy Sanoptera from the Hemiptera. It is strange if over thirty years a tae 
