ZOOLOGICAL SPECIES 



PLACED UNDER AN ALPHABETICAL ARRANGE- 

 MENT OF THE GENERIC NAMES. 



Directions. After having found the generic name of 

 an animal in the foregoing system of genera, find the 

 same name here by seeking its alphabetical place. Tho 

 numbers of the class arid order stand at the left of the 

 name, and the number of species contained in the genus 

 at the right. The description of one species will be found 

 under each genus, and in some cases, a considerable 

 number. 



If the specimen under examination is not described 

 (and not one twentieth of all known species are described 

 in this text-book) find the same genus in Rees* Cyclo- 

 paedia, Turtori's Lirineus, Shaw's Zoology, or in what- 

 ever system comes first to hand. There look out the 

 species. Write the name, and copy the specific charac- 

 ter into the blank leaves, which should be bound up with 

 this text-book at the end. Having paged the blank 

 leaves, make a reference to the page wherein the spe- 

 cies is copied, immediately under the printed descrip- 

 tion of the last species. By this method the student will 

 have a description of his collection, arranged in a man- 

 ner to be as accessible as if it were all in print. 



By pursuing this course a few seasons, each student 

 will be able to contribute considerably towards a system 

 of American Zoology. At present but a small propor- 

 tion of American animals, excepting those of a large 

 size, have been sought out. Insects, in particular, are 

 but little known. And though Mr. Say is doing much ; 



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