—107— 
quently survives the Winter in the larval and pupal stages, In the Spring 
it soon completes its transformations and by the first of June its note is 
heard. ‘They dig burrows and these they occupy probably as long as 
they live, During the months of June and July the meadows and 
pastures and especially the wood pastures are filled with the music of 
their song. Ordinarily in favorite haunts every square rod will contain 
at least one burrow and these burrows are of course frequently much 
more abundant. The males never seem to stray away from their homes 
in the day-time and are often found singing just within the entrance. 
Where their eggs are laid, or when, I have never been able to discover, 
but I have never seen the young before September, so that the eggs are 
probably laid about the time that G. adbéreviafus Serv., are hatching, 
Gryllus pennsylvanicus Burm., is so far as I have observed never a social 
species, not even in the feeding stage. Gryllus abbreviatus Serv., are 
always social and never burrow-inhabiting, although it is very probable 
that they make occasional use of the burrows of their congeners. Mr. 
Scudder says in his ‘* Distribution of Insects of New Hampshire, ”—‘‘At 
Jefferson in 1867 no chirp of a cricket was heard until Aug. 12, although 
they often commence their song in Massachusetts in June,” If 1 am 
right this absence of the cricket serenade in New Hampshire during thé 
months of June and July and early August is accounted for by the fact 
that this locality is north of the range of G. pennsylvanicus. This species ~ 
has not been I think reported from Canada, and Gryllus /uctuosus Serv., 
is rare, so that if I have not erred there should not be heard anything 
more than an occasional cricket chirp in that part of North America be- 
fore the middle of August. It may be well to add in conclusion that the 
only invariable and easily recognized difference between the two species 
is that in the female of G. pennsylvanicus the ovipositor is decidedly 
shorter than the body, including the head; in G. adéreviatus this organ 
is nearly or quite as long as the insect itself. 
There are five species of @canthus, or tree crickets, in the eastern 
part of the United States and these are widely distributed over North 
America. Two, canthus fasciatus Fitch, and Gcanthus angustipennis 
Fitch, have generally been considered varieties of @canthus niveus De 
Geer, but two years observation of this genus has led me to conclude 
that they are quite distinct in structure, habits and song, and they must 
therefore rank as species. The last named species can be distinguished 
from the two former by its broader wing covers, the width of the dorsal 
field compared with the length being about one to two in meus, as well 
as in @canthus latipennis Riley, one to three in angustipennis, and two 
to five in fasciafus. The average of these dimensions is in the first men- 
tioned species .26 to .54 inches ; in the second .30 to .62 inches ; in the 
third .16 to .44 inches and in the last.18 to.46 inches. veus can usu- 
ally be distinguished from all the other species by its color which is ivory 
white, with almost no perceptable infusion of green in the male but the 
elytra of the female may be quite decidedly green. In angusfipennis the 
male as well as the female probably is deeply suffused with green. In 
fasciatus the greenish tint is also predominant in the wings and elytra, 
while the other parts of the insect vary in color from uniform deep black 
to ivory white varied with fuscous or black. In typically colored speci- 
mens however the head and pronotum are whitish with three distinct 
