ADVERTISEMENT. 
Not only is our own, and the Lepidopterous fauna of other countries, constantly receiving 
numerous additions, but innumerable species of already described Lepidoptera, both native 
and exotic, have never been figured, and as a consequent result are in very many instances 
unknown to the student. Having, during the course of over twenty years’ study and collect- 
ing, amassed a great quantity of material, I have concluded to endeavor to carry out my long- 
cherished idea of publishing illustrations and descriptions of such undescribed species as J 
may possess or have access to. The number is immense, embracing many uniques, types, and 
other great rarities of the North American fauna ; also to figure such species as have been 
heretofore described but not figured. I do not intend to confine myself strictly to North 
American species, but will illustrate new or unfigured species from any other part of the 
world — as the value of exotics for purposes of comparison, I think no one will dispute. 
Inasmuch as nature, or nature’s God, did not divide the earth into kingdoms, counties, or 
townships, I don’t see why we should do so in scientific matters. For my part, I con- 
sider an example from Europe, Africa, or elsewhere, as interesting an object of study as 
a North American one ; but, of course, as it happened to be my luck to be born on that 
portion of the earth’s mud, stones, and water, called America, 1 will give precedence to 
the species of this country. It is my purpose to issue oue number every month — each 
number to have one plate ; but where the size of the species will admit, I will put as 
many figures on one plate as possible. Where they are of small size, I will give some- 
times as high as a dozen species on the same plate, but only less than two when the size 
is very large — as in the first illustration, where one necessarily occupied the whole page. 
Of course upper and under surface will always be given, and both sexes with lame aud 
stages of transformation whenever possible. The figures will all be drawn and colored by 
myself from nature. My wish is to secure a sufficient number of subscribers, at as early 
a date as possible, to pay the expenses of printing and paper. The hope of being even 
in a small way useful in this my favorite science will be more than sufficient reward for 
my own trouble aud labor. As soon as I can secure an adequate number of subscribers, 
I will add one other plate to each number, without increasing the price — which is fifty 
cents per number. I will always give as complete technical description and history of 
species as possible, also such observations or facts as I may deem of general interest to 
the Entomologist. 
Trusting that the Entomological world, and friends of Science and Art generally, will 
feel enough interest in my undertaking to send in their names and subscription price for 
A. D. 1872, viz : six dollars, at as early a date as convenient, 
I am yours, truly, 
HERMAN STRECKER, 
Box 111 Reading P. 0., Berks Co., Pa. 
