36 FIRST ANNUAL REPORT OF 



counties, North Carolina, in 1792, 1809, 1826 and 1843. In Dearborn 

 county, Indiana, in 1S43 and in I860, and in Kalamazoo, Michigan, dur- 

 ing the same years. 



BROOD XJII.— Septemdecim— ISM, 1878. 



In the year 1878, and at intervals of 17 years thereafter, they will, 

 in all probability, appear along the centre of the State of Illinois, all 

 along the southern part of Iowa, and around St. Joseph, in Buchanan 

 county, in North Missouri. 



The records are abundant, of their appearance, in 1844 and 1861, 

 all along tte southern border of Iowa, and in Mason, Fulton, McDon- 

 ough and Champaign counties in Central Illinois. In 1861 they also 

 occurred in Champaign county, Central Ohio, and in Buchanan county, 

 Northwest Missouri ; and this brood not unlikely occupies, more or 

 less, the whole strip of country between these two points. Their ap- 

 pearance in 1861 was associated with the first year of the rebellion; 

 and Dr. Smith records this brood both in Illinois and Iowa in 1844. 



BROOD XIV.— Septemdecim— 1862, 1879. 



In the year 1879, and at intervals of 17 years thereafter, they will, 

 in all probability, appear in the whole of western Missouri, commenc- 

 ing south about Johnson and Saline counties, and extending in a 

 northwesterly direction to Lawrence and above, in Kansas, south to 

 Arkansas, and west an unknown distance into Kansas ; also, in Cen- 

 tral Ohio. 



The occurrence of this brood in 1845 and 1862 is well remembered 

 by several of my correspondents, and is recorded by Dr. Smith. At 

 St. Joseph, in Buchanan county, Mo., Cicadas were not so thick in 

 1862 as in 1861. Had it been the reverse, or, in other words, had they 

 been more numerous in 1862 than in 1861, 1 should have been inclined 

 to record the visit of 1861 as but a precursor to this Brood X ; but as 

 it is, I believe the two broods are distinct, and that they occur for two 

 consecutive years, both in Central Ohio and in portions of Northwest 

 Missouri. 



This brood has not been traced further east, in Missouri, than Sa- 

 line county, and yet a detachment of it certainly occurs in Ohio, for 

 Mr. Clarke Irvine, of Oregon, Holt county, Mo., well remembers their 

 occurrence in Central Ohio in 1845 and 1862. Though there is no 

 knowledge of the appearance of this Brood XIV in Illinois, yet the 

 fact of its occurring both in Ohio and in North Missouri, and that, too, 

 but one year after Brood XIII, would indicate that there may have 

 been, in times past, at all events, if there is not at the present day, a 

 geographical connection between these two broods. 



BROOD XV.— Septemdecim— 1863, 1880. 



In the year 1880, and at intervals of 17 years thereafter, they will, 

 in all probability, appear from western Pennsylvania to Sciota river, 



