346 ENTOMOLOGICAI, NEWS [Nov., 'l8 



Length of the body, 9.5 mm. ; pronotum, 8.5 mm. ; hind femora, 5.5 

 mm. 



$ . — A male paratype measures : body, 8.5 mm. ; pronotum, 7.5 mm. ; 

 hind femora, s mm. 



This form may be only a race or variety, of proaviis, yet 

 the several characters which differentiate it warrants its de- 

 scription as a distinct species. 



Habitat, Clarksville, Tennessee (Blatchley). 



Type ? and allotype S , Clarksville, Tennessee, in the col- 

 lection of W. S. Blatchley. 



Differential Synopsis of the Species of Cavotetiix. 



1 (2) Crest of pronotum moderately low ; dorsal front margin trun- 



cate or nearly so, partly covering occiput, but not reaching to the 

 middle of the eyes; minute tegmina of female much longer than 

 one of the eyes ; median carina of vertex strongly compressed and 

 prominent; median carina of pronotum thinly cristate, arcuate and 

 translucent forward, longitudinally lower over the middle area, 



Cavotettix nullisinus sp. nov. 



2 (i) Crest of pronotum rather high; dorsal front margin obtuse 



angulate reaching over the head to the middle of the eyes. 



3 (4) Hind femora distinctly elojigate; superior tegminal sinus of the 



lateral lobes obliterated ; tegmina absent in female (or when pres- 

 ent in male very minute, vestigial) ; wings absent; scapular area at 

 the sides of the pronotum substraight, very broad and slightly 

 dilated forward Cavotettix aptcrus sp. nov. or race. 



4 (3) Hind femora moderately robust; superior tegminal sinus rep- 



resented by a notch; tegmina of female about as long as one of 

 the eyes ; absent in the male ; scapular area not dilated forward. 



Cavotettix proavus Rehn & Hebard. 



The Status of Nomotettix borealis Walker. 

 Some years ago when E. M. Walker^ described the species 

 Nomotettix borealis, I was led to believe that this species was 

 the same as Nomotettix sinufrons Hancock, described ten 

 vears before.' After a recent reference to this species by 

 Rehn and Hebard^ where a synopsis of borealis \s again given 

 after a study of the type, I am more than ever satisfied that 

 borealis and sinufrons are identical. The type of sinufrons 

 in my collection is from St. Anthony Park. Minnesota, while 

 Walker's type came from the Temagami District, Ontario. 



