64 Kansas Academy of Science. 



range, hybernates in the winged condition, and differs not only in size and habits from 

 the Kocky Mountain locust, but entomologically is as widely separated from it as a sheep 

 from a cow. It is a species common over the country every year, and during excep- 

 tional years becomes excessively numerous and acquires the migratory liabit, its wings 

 being long and Avell adapted to flying. It has been very abundant the present year, and 

 toward the end of July, while in the unfledged condition, did an immense amount of 

 damage to the cotton and otlier crops of Georgia and South Carolina. The papers were 

 full of graphic accounts of their destruction, and editors not only very generally took it 

 for granted that they had to do with the Western spretus, but Mr. T. P. Janes, Commis- 

 sioner of Agriculture for Georgia, in his circular No. 27, supposed they were the same. 

 Specimens which he subsequently sent me, however, at once revealed their true char- 

 acter. 



In September, 1875, large swarms of locusts passed over Illinois, and those who were 

 bent on the idea that there was no reason why that State should not be overrun with the 

 Kocky Mountain locust, found the apparent justification for their views in the said 

 swarms. Yet tliese proved to be composed of tliree species,* indigenous to Illinois, and 

 every j^ear common there; and after settling they did no harm, and nothing was heard 

 of their progeny the following spring — all of which would have been very different had 

 it been a question of the Western sprehis. 



The damage done by some of the more common locusts that occur over the country, is 

 sometimes very great, especially during hot, dry years. In some of the New England 

 States their ravages have, in restricted localities, fairly equaled those of the voracious 

 spretus of the West. But while a few of them, under exceptional circumstances, develop 

 the migratory habit, they none of them ever have, and in all probability never will, com- 

 pare with Caloptenus spretus in the vastness of its migrations and in its immense power 

 for injury over extensive areas. 



In economic entomology, discrimination between species is very important, and a lack 

 of it often leads to most erroneous conclusions. Whenever we hear of locust flights east 

 of the Mississippi, we may rest satisfied that they are not of our Rocky Mountain pest, 

 and are comparatively harmless. 



Manhattan, Kas., Oct. 28, 1876. 



ADDITIONS TO KANSAS MAMMALIA. 



BY M. V. B. KNOX, OF BALDVPIN CITY. 



2a. Lynx rufns, var. maculatus, Horsfield and Vigors. Texas Wild Cat. Less frequent 

 than L. rujus. 



39. . Mouse, taken near Baldwin; not yet identified. 



62. Sorex . Taken at Coal Creek, 1873, by C. K. Jones. 



63. Hesperomys Nuttalli, Harlan. Red Mouse. In Col. Goss' museum, Neosho Falls. 

 Taken at Colony, March 7, 1873, by J. J. Fairbanks 



64. Arvicola pinetorum, LeC. Taken near Baldwin City, 1876. 



65. Perognathns flavus, Baird. Taken at Nickerson, Reno county. May, 1876. 



66. Blarina talpoides, Gapper. Taken at Baldwin City; by Geo. Cheney, April 6, 1877. 



*The Differential locust {Caloptenus differentialis), the Atlantic locust {Caloptemts Atlantis), and the 

 red-legged locust (Caloptenus femw-rtibrum). 



