1909.] 



PUBLIC DOCUMENT — No. 31. 



203 



in this way, and from other sources, the following statement has 

 been prepared : — 



Letters were also sent to the following places, but no cicadas 

 were reported: Truro, Eastham, Chatham, Harwich, West 

 Brewster, Carver, Rochester, Acushnet, Plympton, Lakeville, 

 Halifax, Dartmouth, Berkley, Hanson, Seekonk, West Duxbury, 

 Attleborough, Campello, Franklin, Stoughton, Mansfield, Pem- 

 broke, Norwood, Westwood, Walpole, Bridgewater, West Bridge- 

 water, Bellingham, Norwell, Millis, Canton. 



From this it will be seen that the brood is generally dis- 

 tributed between Manomet, Wareham and Dennis, being 

 strongest between Sandwich, Bourne, Falmouth and Osterville. 

 In this central part the brood seems to be as strong as ever, but 

 along the outside, in what I have called the overflow, it is grad- 

 ually running out. It must be remembered, however, that these 

 cicadas in Plymouth and Barnstable counties form only a part 

 of this brood. 



In 1889 Riley and Howard gave its extent as follows: — 



The region commences in southeastern Massachusetts, extends south 

 across Long Island and along the Atlantic coast of New Jersey, Dela- 

 ware and Maryland, as far as Chesapeake Bay; then up the Susque- 

 hanna in Pennsylvania to a point a little below Harrisburg; thence 



