1(3(5 



psr-CHE. 



[Xoveiiiber i?94. 



Specimens illustrative of the preced- 

 ing statements have been examined in 

 the preparation of this paper and with 

 but one exception occur in my collec- 

 tion. 



Bolivar makes use of the markings 

 of the tegmina in his key to the species 

 of this genus. Our forms usually have 

 a white or flavcscent spot neur the apex 

 of the tegmen, but in dry cabinet 

 specimens this is not invariably present, 

 either in lateralis or polymorpha. 



Habits^ etc. — Our members of this 

 genus agree in habits with the species 

 of Tetti'x, preferring moist, grassy and 

 sedgy meadows, particularly on rather 

 light soil. 1 have taken them in such 

 situations in company with Tetti.s 

 gratiulatus and T. ornattis^ and even 

 along roadside gutters on springy land, 

 where the ground was moist and sand}'. 

 In New England polytnorpha is about 

 three times as common as lateralis. 

 The sexes seem to be taken in about 

 equal numbers except that where plenti- 

 ful I have secured aliout twice as many 

 (J as 9 poly 7110 rpha. 



Both forms probably occur through- 

 out New England. I have specimens 

 of polyiuorpha from Fryeburg and 

 Norway, Me., Hanover and Keene, 

 X. H. (C. M. Weed), Jackson, N. H., 

 Brattleboro, Vt. (Mrs. J. B. Powers), 

 Hartland, Vt. (C. M. Weed), Newport, 

 Vt., Beverly, \^^ellesley and several 

 towns in its vicinity, and Winchendon, 

 Mass. (Also from Adams, but the 

 specimen was afterward lost.) Canaan, 

 North Haven, So. Kent, Stamford, and 

 Thompson, Conn. The lateralis form 



I have from Fryeburg, Me., Hanover, 

 N. H. (C. M. Weed), Jay, Newport, 

 and Stowe, Vt., Wellesley and Win- 

 chedon, Mass., and l51ock Id., R. I. 

 Both forms were common in a meadow 

 in Fryeburg. Me., on Aug 20, and I 

 secured about 30 lateralis, 60 polymor- 

 pha and 20 young in a couple of hours. 

 The \'oung varied much in size, some 

 being but one-quarter grown, others in 

 the last stage. Two years later at the 

 same time of the month I found the 

 young rather more common than the 

 adults, in several localities in Conn. 



Both forms, though widely spread, 

 are rarely found in considerable num- 

 bers. I have seldom taken over half a 

 dozen at a time. U'hey seem to be 

 more plentiful in the central states than 

 in New England. I have found drag- 

 ging or sweeping the net closely over 

 the ground in the localities frequented 

 by them to be the most successful 

 method of capture. 



The American naturalist (1S94, pp. 

 4S3-4S7) contains an interesting account 

 from the pen of Dr. J. L. Hancock, of 

 observations on migratory flights of 

 lateralis witnessed in Chicago, the 

 insects being attracted to the electric 

 lights in large numbers. 



LIST. 

 Tettigiae. 

 I. Nomotettix. 



1. cristatus Hair. 

 .0 ■' " type fonii. 



.1 " carinatiis Scudd., var. 



