Brood XXIX is very doubtful, and the records are possibly based 

 on confusion with the 17-year race. 



NEW BROODS 17-YEAR RACE. 



Brood XII, 190Jf. — If his records are correct, this brood is the 

 one referred to by Dr. G. B. Smith as occurrring in 1853 in Vinton 

 County, Ohio, and Jo Daviess County, 111. Its recurrence seems 

 not to have been recorded either in 1870 or 1887, and Smith's records 

 are therefore open to question. 



Mr. J. R. Burke, Milton, Cabell County, W. Va., writing under 

 date of May 22, 1897, says: " The Cicada is not due here until 1904; 

 its last visit was in 1887." 



Mr. W. S. Herrick, Thurman, Allen County, Ind,, writes under 

 date of June 10, 1898, that "We had the 17-year locust in 1887, if 

 I remember correctly." This is also a doubtful record, and it is 

 possible that he referred either to Brood XXII, occurring in 1885, 

 or Brood V, occurring in 1888. 



That all these records are open to some doubt is apparent, but they 

 are of sufficient importance to warrant investigation in 1904. 



Brood XV, 1907. — This brood is represented by the colony appear- 

 ing at Tivoli, Duchess County, and Gal way, Saratoga County, N. Y., 

 in June, 1890, as recorded by Prof. J. A. Lintner in his Seventh 

 Report, pages 297-301. Mr. Davis records the occurrence of scat- 

 tering individuals the same year on Staten Island. In a letter of 

 June 2, 1890, Prof. J. B. Smith, New Brunswick, N. J., reports that 

 the periodical Cicada had been taken by several Newark collectors, 

 and had also been observed at Auglesea, Cape May County. 



Another record which perhaps applies to this brood is given by Mr. 

 I. N. Smith, Scotland Neck, Halifax County, N. C, in letter of 

 June 22, 1885. He reports that his "First recollection of the locust 

 was about the year 1839 or 1840, when the whole of the white-oak 

 lands were filled with them. * * * In 1855 or 1856 they appeared 

 again, but nothing to compare with the period first stated. The 

 locusts were all on the white-oak land and on the Roanoke River and 

 not on the pine lands." Assuming the dates 1839 and 185G to be the 

 correct ones, this would throw this swarm of Cicadas into Brood XV, 

 and if there are any representativs left they should reappear in 1907. 



The late Mr. W. S. Robertson, of Muscogee, Ind. T,, in a letter of 

 June 17, 1879, incidentally mentioned also the occurrence of a brood 

 of Cicadas 1839. This record could not fall in any one of the old 

 broods, and if it belongs to the 17-year race it would be an extreme 

 western outpost of XV. 



Brood XVII, 1909. — A very definite record which may coincide 

 with this brood is furnished by Mr. Theodore Pergande, of this 

 Division, who states that Mr, Rosseau, of Charlottesville, Albemarle 



