127 



six paragraphs is the same species as the Hateful Grasshopper of the 

 other side of the Eocky Mountains. Indeed, as the young ones that 

 hatched out underground from the eggs in November, 1867, are said 

 to have been "green," while those that hatched out in Kansas from 

 the eggs of the true Hateful Grasshopper in the spring of 1867, are 

 said by Mr. Goble to have been "milky-white upon leaving the egg," 

 (above, p. 123,) 1 should rather infer that it belonged to a different 

 species, peculiar to the western slopes of the Eocky Mountains. If it 

 be the same, its appearing in the winged state in Utah, A. D. 1867, 

 nearly a month sooner than it appeared in the Valley of the Missis- 

 sippi, A. D. 1866, may be accounted for, partly by the western expos- 

 ure of the Eocky Mountains being perhaps warmer than the eastern 

 exposure, which would, of course, have a tendency to accelerate the 

 transformations of the insect, and partly by the invading army not 

 having to march so far in this case to reach its "objective point." In 

 the lowlands on this side of the Eocky Mountains, the average daily 

 progress of the Hateful Grashopper, when full fledged, in 1866, was 

 only, as we have seen, from five to ten miles. (Above, p. 121.) 



THE LAST INVASION OF THE HATEFUL GRASSHOPPER IN THE 



AUTUMN OF 1867. 



From the following extracts, which I have laboriously gleaned 

 from various sources, it appears that, contemporaneously with the 

 above invasion of Utah and just one year after the Grasshopper-inva- 

 sion of Kansas, Nebraska and Missouri in 1866, and at least 42 days* 

 after the last remnants of the descendants of that great army had 

 finally wasted away and disappeared from the invaded territory, a 

 fresh host of invaders descended upon the fertile plains of the Mis- 

 sissippi from the barren canons (kanyons) of the Eocky Mountains, 

 and at precisely the same period of the year. This time, however, 

 they took a rather more northerly course, the main body descending 

 though Nebraska upon Iowa, instead of through Kansas upon Mis- 

 souri. Still, in both years there were flying columns of the enemy, 

 that deviated a little from the general line of march either to the 

 right or to the left. For, as will be seen hereafter, some of the more 

 northerly parts of Kansas and the extreme north-west corner of Mis- 



*As may be seen .by the accounts collected from various sources and 

 printed above, the departure of the Grasshoppers that hatched out in the 

 spring of 1867 in Kansas, Nebraska and Missouri, from eggs laid in the 

 preceding autumn, is variously dated in various localities from June 25th 

 on to July 14th; while the earliest invaders in the autumn of 1867, as will 

 be immediately shown, appeared August 25th, and the latest September 30th. 



