150 



PSYCHE. 



[October 1S04. 



containing it. I cannot agree with 

 liim, however, in considering it to be- 

 long to the same genus as Tettix sjibu- 

 /at us, o-i-anulatus, etc., and propose 

 for it a new generic appellation. 



I. NOMOTETTIX gen. nov. (vo(ids. pas- 

 ture ; .ind TtTTil). 



Lateral lobes of the pronotum with 

 the postero-dorsal sinus shallow, about 

 one-half the depth of the antero-ventral 

 sinus. Pronotum advanced upon the 

 head, rather sharply tectiform. Occiput 

 of head with a pair of nipple-like or 

 mammillate protuberances between the 

 posterior portion of the eyes and the 

 median line. Type, Tetrix cristata 

 Harris. 



The type also differs from the group 

 of species containing Tettix gya7iu- 

 lattis in having stouter hind femora 

 and but 12, sometimes 13, joints in the 

 antennae, instead of 14, frequently 13. 

 It differs markedly in the character of 

 its haunts, also, preferring dry soil to 

 moist, upland pastures to meadows, 

 whence the treneric name. 



I. Nomotettix cristatus Hair. Figs, i, la, 

 lb, ic, id. 



Tetrix cyistata Harr. Mss. "I o . j o 



D , I -J ■ J , > bcudder, 47s. 



Batrachidea cristata J ^' 



" " Scudd. Thomas, 190. 



Han-. Feniald, 48. 



Tettix cristatus Scudd. Bolivar, 257, 260. 



Batrachidea cristata Harr. Morse, 54, 107. 



Foim carinatus. 



Batrachidea carinata Scudder, 479. 



" •• Scudd. Thomas, 190. 



" " " Fernald, 49. 



" " " = Tettix cris- 



tatus Scudd. Bolivar, 260. 



Batrachidea carinata Scudder = B. cris- 

 tata Harr. Morse, 54. 



Batrachidea cristata carinata Scudd. 

 Morse, 107. 



The two forms here treated as belong- 

 ing to one species were considered and 

 perhaps are still by some as distinct 

 species. Bolivar in his "Essay" united 

 the two under T. cristatus Scudd. 

 [more properly Harris] , but judging 

 from his description of JS. carinata he 

 had never seen it and failed to com- 

 prehend the characters distinguishing 

 it, mistaking for it certain specimens 

 of the cristatus form. He states that 

 the pronotum is longer than the abdo- 

 men, extending a little beyond the hind 

 femora, its posterior point being 

 '••inflected and directed dozvutvard" 

 (the italics are mine), and the median 

 carina less strongly arcuate. This fits 

 such specimens exactly, but docs not 

 apply to caritiatits. Carinatus is 

 quite rare, but one or two occurring 

 to the hundred of cristatus; specimens 

 of the other form are common although 

 less plentiful than those in which the 

 pronotum fails to reach the tip of hind 

 femora. A glance at figs, i and la 

 will at once enable the relation of 

 cristatus and carinatus to be under- 

 stood, carinatus having th.e wings 

 perfectly developed and the pronotum 

 elongated and slightly 2tpturncd at the 



