366 PHYSICAL GEOGRAPHY. 



the tegmina are raised at fully a right angle to the body. The night-song 

 consists of thrrr repeated incessantly, three parts of song and one of 

 rest in every three seconds. 



Fig. 50. 



thrrr 



000000000000000 0l0 0000000 



[ etc. de novo. 



010 !0 b b 



Note of CEcantlius niveus by night. 

 LOCUSTARI/E. 



6. CciithopJiilits maculatus Scudd. is found throughout New England 

 and as far south as Maryland. I once took a specimen half way up Mt. 

 Washington. All the Vermont specimens I have seen are unusually 

 dark. 



7. PJiylloptcra oblongifolia Burm. has not been found in the state, but 

 as it occurs somewhat abundantly in Massachusetts, and is found as far 

 west as Iowa, it doubtless inhabits at least the southern part of New 

 Hampshire. I have not studied its note attentively, but if I recollect 

 aright, it gives three rapid notes in succession like the katydid. 



8. Phcmcroptcra curvicauda Serv. This insect is found all over the 

 state, even inhabiting the sub-alpine zones of the White Mountains. It 

 is found also as far south as the Carolinas, and west to the Red river set- 

 tlements of British America, to Michigan, and Illinois. It is more noisy 

 by night than by day; and the songs differ considerably 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 watching one of these 

 little creatures close beside me ; as a cloud passed over the sun, he sud- 

 denly changed his note to one with which I was already familiar, but 

 without knowing to what insect it belonged. At the same time, all the 

 individuals around me whose similar day-song I had heard, began to 

 respond with the night cry : the cloud passed away, and the original note 

 was resumed on all sides. Judging that they preferred the night-song to 

 that of the day, from their increased stridulation during the former period, 



