A363- 
Over the lov/er Mississippi Valley, occupying almost exactly the 
territory not occupied by the 17-year race of the periodical cicada, occurs 
a 12-year race. The appearance of this race every 13 years led to very 
considerable confusion of the broods in the early studies of the insect, 
made when all the broods rjere throught to be of 17-year occurrence. Of 
this 13-year race a very small and doubtful Brood XXVII is recorded by 
C» L. Marlatt (Bui. 71, Bur. Ent., p. 75) from Franklin County, Miss. This 
brood was first observed in 1902, and ^ain in 1915 in the same county. 
In each case but fe^v speciuiens v^ere seen. In the latter year a few speci- 
mens were observed at Lake Chicot, Chicot County, and Helena, Phillips 
County, Ark, This year the only report received of this brood was a single 
specimen taken in a boll-weevil emergence cage at Yazoo City, Yazoo County, 
Miss. The only brood of any size from which this specimen could have 
been retarded is Brood XXVIII^ #iich occurred in 1924. A retardation of 
four years is hardly in keeping with our general theory as to the appear- 
ance of these broods. These emergences are more easily accounted for by 
assuming that they are the last survivors of a disappearing brood that 
once flourished in that region before the advent of the white man. 
The following list of lotsdities, arranged by States and counties, 
is intended to be a complete record of all observations on the appearance 
of Brood II* 
Connecticut 
Fairfield ; Hartford . Avon 1911, Berlin 1911, Bristol 1894, 
East Berlin 1894, Famington 1877, 1894, and 1911, Hartford 
1894, New Britain 1894, 1911, and 1928, Plainville 1894 and 1911, 
Rocky Hill 1911, Southington 1911 and 1928, 77est Hartford 1911, 
Windsor 1894; Litchfield ; Middlesex . Cromwell 1911, Durham 1860,1877, 
1894, and 1911, Higgan\am 1894, Killingworth 1911, Middlefield 1894 
and 1911, iviiddletown 1894 and 1911, Westfield 1894; New Haven . 
Branford 1894, 1911, and 1928, Cheshire 1911 and 1928, East Haven 
1894 and 1911, Guilford 1894, 1911, and 1928, Hamden 1911 and 1928, 
Meriden 1877, 1894, 1911, and 1928, Movint Carmel 1394, New Haven 1894, 
1911, and 1928, North Branford 1894, 1911, and 1928, North Gvdlford 
1894, North Haven 1911 and 1928, Reeds Gap 1894, Wallingford 1894, 
1911, and 1928, V/oodbridge 1928» 
District of Columbia 
Hope Hill 1894, Naval Observatory 1894, Rock Creek Zoological 
Park 1894. 
Illinois 
De Witt , Clinton 1911; Livingston . Fairbxiry 1894; Mason 1877, 
Indiana 
Dearborn: Fountain. Silverwood 1911; Posey . Mount Vernon 1894. 
