470 FAMILY VII. TETTIGOXIID.10. THE KATYDIDS. 



acter of differential value. No one can satisfactorily separate a 

 species, or even a race based on such a diagnosis, and as speci- 

 mens at hand taken by Gooderham in Nova Scotia and Quebec 

 show that the structural characters of the genital organs are pre- 

 cisely the same, I regard their name no more necessary than would 

 be one for the small narrow-winged individuals of texensis record- 

 ed above from Florida. In the southern and southwestern states 

 8. curvicauda merges with a form, the #. laticauda Brunner, 

 which has some definite structural characters which are evident 

 and which probably represent a valid race. 



The more recent records of cnn-ic(iii(l<i. which can be relied 

 upon as belonging to that species, show that in the east and north 

 it is more arboreal than in Indiana. Walker (1904a, 320) states 

 that his Toronto specimens all came from trees and bushes in 

 more or less open, partly wooded country. In Pennsylvania Fox 

 (1914, 518) found >S y . curriedinhi to be ''essentially a sylvan spe- 

 cies frequenting the trees and underbrush of both dry and moist 

 woodlands, less frequent in the border thickets of open meadow- 

 lands," while about Tappahannock, Va., the few examples taken 

 were found in bushes and briery thickets in the vicinity of 

 woodland. R. & H. (1914a, 284) state that the species is "common 

 and widely distributed through the undergrowth of the woods in 



bzrwi bzrwi bzrwi 



tcliw tchw tcbw Iclnv tebw tc]iw 



b 



PPT - PFTT 



chic - a chee chic - a - chee 



Fig- IS5- a, Note of Scuddcria curvicauda by day; b, note of same 

 species by "night; c, note of Amblycorypha rotnndifo/ia. (After Scudder.) 



the Pine Barrens of New Jersey; in this region S. texensis is also 

 common, but is found only in marshes, swamps or bogs." 



Scudder (1893) has set the day and night songs of >S'. cnrvi- 

 coudfi to scale, and has given a pleasing account of their notes as 



follows : 



"It is more noisy by night than by day; and the songs differ consid- 

 erably at these two times. The day song is given only during sunshine, 

 the other by night and in cloudy weather. I first noticed this while watch- 

 ing one of the little creatures close beside me; as a cloud passed over the 

 sun he suddenly changed his note to one with which I was already famil- 



