52 THE PERIODICAL CICADA. 
Garinan for Kentucky, (^iiaiiitance for Maryland. Felt for New York, 
and Hopkins for West A'ir<rinia. 
Leaving out the numerous scatterino: colonies the brood occupies 
tliree important regions: (1) An eastern region, covering Long Island, 
New Jersey, southeastern Pennsylvania, northern West Virginia and 
Virginia, and most of Delaware and ^laryland; (2) a southern region, 
covering the Lower Alleghanies in northern Georgia, Tennessee, and 
North Carolina; and (3) a middle western region, covering western 
Ohio, southern Michigan, all of Indiana, except the lake shore 
(Webster), and the eastern line of Illinois. ]\Iany reports of scatter- 
ing occurrence^ or of chance individuals connect these three regions 
and also extend the range westward as far as the Missouri River 
(Iowa) and northward into New York and Vermont and possibly 
Massachusetts. But in the main the three regions designated include 
the abundant appearance of the brood in dense swarms. 
'\Miere conditions had remained at all favorable there was very 
little falling off in abundance of the Cicada at the time of its last 
appearance in 1902. In the District of Columbia, where the writer 
personall}" observed the insect, emergence began with the second week 
in May and was a fairly prolonged one, extending over three or four 
weeks. '^ In this brood the small variety, cassinii, is perhaps better 
represented than in am" other, and this small variety appeared very 
generally in 1902, and in great numbers. The deposition of eggs 
began about June 1 and continued with considerable activity until 
the middle of this month and was of sufficient amount to kill the 
terminal branches of trees, in some cases almost all the outer branches 
dying. 
A big transplanting of eggs was made from the surrounding forests 
of the District to the grounds of the Department, where very few 
Cicadas had appeared, and all of them had been destroyed by birds 
before any egg laying had been done. This planting was made in the 
oak grove on the west side of the grounds, where similar experiments 
had formerly been in progress, so as to afford material for study of the 
development of the larvse. 
The records of distribution given below include all availal)le data. 
The starred counties are those in which the Cicada appeared in 1902" 
in one or more dense swarms. The italicized counties coniirm older 
records, and the counties in parentheses are old records which failed 
of confirmation in 1902. This last does not necessarily mean that the 
Cicada was absent from these counties, ])ut simply the failure to 
receive reports of occurrence. A great many negative re})orts were 
received, and, as ])latted on a large study map, coniirmed the accu- 
racv of the rauire of this brood as now i2:iven. 
o See Proceedings Entomological Society, Washington, Vol. V, 1902, pp. 124-126. 
