488 Canadian Record of Science. 
Notices of Books AND PAPERS. 
“THE FosstL INsEcts oF NORTH AMERICA, VOLS. I AND II, BY 
Pror. S. H. ScuppER ; MAcMILLANn & Co., New.YorxK, 1890,” 
WITH SPECIAL REFERENCE TO CANADIAN SPECIMENS. 
Having had oceasion to look into Prof. Scudder’s recent monograph 
of ‘‘The Fossil Insects of North America‘’ it has occurred to me 
that for students of Canadian geology, it might not be uninteresting 
to write a few notes on that part of this admirable work which 
affects them more particularly, and give a condensed list of the 
forms therein described with a view of ascertaining what has been 
done to date. 
VOLUME I. 
The first paper or portion of this volume which refers to Canadian 
insects, is one entitled: ‘‘On the Carboniferous Myriapods pre- 
served in the Sigillarian stumps of Nova Scotia,’ with supplement- 
ary page and cut, pp. 21—31. 
Full descriptions of the following species are therein given :— 
MYRIAPODA. 
1. Xylobius sigillarize, Dawson. 
2 ef similis, Scudder. 
oh Sf fractus, Scudder, 
4 a Dawsoni, Scudder. 
5. Archiulus xylobioides, Scudder. 
Then comes the chapter on *“‘The Devonian Insects of New 
Brunswick,” with a note by Sir William Dawson, pp. 154-194; and 
elaborate descriptions of six species from the Devonian rocks of New 
Brunswick, as follows: ; 
1. Platephemera antiqua, Scudder. 
Gerephemera simplex, Scudder. 
Dyscritus vetustus, Scudder. 
Lithentomum Harttii, Scudder. 
Xenoneura antiquorum, Scudder. 
Homothetus fossilis, Scudder. 
Oe wb 
These belong to the family of the Ephemeridé, whose structure 
and affinities are discussed at great length, whilst a summary of 
facts regarding fossil insects is given, which may well be presented 
here in a condensed form :— 
Prof. Scudder’s conclusions regarding early fossil insects are 
these :— 
(1.) *“‘ That the general type of wing structure has remained un- 
altered from the earliest times. 
(2.) These earliest insects were Hexapoda. 
(3.) They were all lower Heterometabola, 
