272 
Underwood, and contains the collected writings on North American 
Myriapoda, both published and unpublished, of the late C. H. Bollman. 
There is an introduction, with a brief biography of Mr. Bollman, by C. 
V. Riley; areview of the literature of the North American Myriapoda, 
by L. M. Underwood; a collection of Mr. Bollman’s published writings 
on Myriapoda, including fifteen numbers, and a series of posthumous 
papers comprising eleven numbers. There is also an index to the sci- 
entific names, and the whole bulletin covers about 210 pages without 
illustrations. 
The two separates from the Proceedings are Nos. 950 and 951. No. 
950 consists of a ‘‘ Descriptive Catalogue of the Harvest Spiders (Pha- 
langiide) of Ohio,” by C. M. Weed. The paper is descriptive in a 
large sense and brings together Mr. Weed’s writings upon the Ohio 
Harvest Spider fauna, republishing his plates and figures, and bringing 
the whole matter into convenient shape for reference. No. 951 is a 
“Report on the Insecta, Arachnida, and Myriapoda” of the U.S 
Eclipse Expedition to West Africa in 1889~90, by C. V. Riley. The 
paper includes reports upon the Hymenoptera, by Mr. W. F. Kirby, of 
the British Museum; upon the Lepidoptera, which could not be deter- 
mined at the National Museum, by Rey. W. J. Holland; upon such of 
the Coleoptera as could not be determined in the National Museum, by 
Dr. David Sharp, Mr. Champion, Mr. Jacoby, and Mr. Gorham; upon 
the Orthoptera, by Mr. H. de Saussure; upon the Pseudoneuroptera, 
by Mr. P. P. Calvert; upon the Hemiptera, by Mr. A. L. Montandon, 
and upon the Arachnida, by Dr. George Marx and Mr. Nathan Banks. 
The Myriapoda were sent to Messrs, Cook and Collins, but on account 
of* the delay in publication this portion was withdrawn by the authors 
and published elsewhere. New species are described by Messrs. Cal- 
vert, Banks, and Marx, the latter contributing a handsome plate illus- 
trating a new genus and six new species of spiders. 
EVOLUTION OF THE WINGS OF INSECTS. 
Prof. J. H. Comstock, of Cornell University, has published an extremely 
interesting paper under the title ‘“‘ Evolution and taxonomy, an essay 
on the application of the theory of natural selection in the classification 
of animals and plants, illustrated by the study of the evolution of the 
wings of insects and by a contribution to the classification of the Lepi- 
doptera.” This paper is published in the Wilder Quarter Centennial 
Book, a ‘‘Festschrift” published the present autumn by some of the 
old students of Prof. Burt G. Wilder, of Cornell University. Prof. 
Comstock’s paper is a very elaborate one and not susceptible of an 
appropriate review in the short space which we can devote to it. He 
argues that some effort should be made in the classification of species 
to learn the reasons for variations of form and in this way to judge 
the value of evident characters used in grouping or separating species 
and higher groups. He practically insists upon the study of phylogeny 
