OF WASHINGTON, VOLUME XII, 1910. 41 



heard as soon as the ground dries and warms up in March and 

 April and continue until midsummer. In this locality the 

 chirping form also occurs, but I find it very much less com- 

 mon. I have rarely heard it in April, when the trilling form 

 is not commonly heard in late summer, at the season when the 

 chirping form is most frequently heard. In late September I 

 heard and captured specimens of the chirping form in the 

 mountain region of Towns County, Georgia, but did not hear 

 the trills of the other form there at any time. In a recent 

 October trip to New England I found the chirping form ex- 

 ceedingly common in central Massachusetts. In every field and 

 pasture throughout this region these crickets were chirping in 

 the leaves and grass in great numbers during warm, sunny 

 days. I have never heard the southern trilling form in New 

 England. It would seem that a great proportion of the south- 

 ern individuals of Grvllus pennsylvanicus have the trilling 

 habit, while the chirping habit is quite characteristic of those 

 in the more northern portion of its range. 



Among the species of Nemobius, Nemobius canus Scudder 

 occurs at Thompson's Mills. In September I captured a num- 

 ber of males and females of this species, and heard its notes in 

 the woods in this locality. I find this large and active Nemo- 

 bius only in the dry leaves of upland woods. 



The song of this species is a high-pitched tinkling trill ti- 

 ti-ti-ti-ti-ti-ti, prolonged indefinitely. It sings by day and at 

 night, and appears fairly common at Thompson's Mills. Other 

 species of Nemobius no doubt occur here, but the writer hopes 

 to study these more fully before recording their songs. 



One of the smallest crickets of this region is Anaxipha 

 exigua Say. I find this tiny insect common in the thickets 

 and tangles of vines, weeds, and low shrubbery in wet grounds 

 and bordering streams. Unlike the species of Nemobius which 

 are strictly ground dwellers, Anaxipha exigua lives on the 

 stems and leaves of low plants and vines just a few feet above 

 the ground. This pretty cricket is very active, and not read- 

 ily captured in its natural hiding places in the dense vegeta- 

 tion of wet situations. Its notes are a faint, shrill, prolonged 

 tinkling ti-ti-ti-ti-ti-ti-ti-ti. Dwelling in almost impenetra- 

 ble tangles, it is exceedingly difficult to separate the notes of 

 a single singer from among the tiny, tinkling medley which 

 seems to pervade the atmosphere of the locality. This crick- 

 et is musical by day and at night. 



Another tiny cricket which dwells in exactly similar situa- 

 tions together with Anaxipha exigua is Phyllosrirtus pulchel- 



