THE CANADIAN ENTOMOLOGIST. 53 



NOTES ON ARKANSAS TRUXALIN.^. 



DV JEROME MCNEILL, FAYETTEVILLK, ARK. 



This subfamily is rather poorly represented in Arkansas, only eight 

 of the thirty-one genera recognized by me as occurring in North America 

 having been found within its borders, and only one genus, Orp/iula, is 

 represented by more than a single species. 



Mermiria rostrata, McNeill. — Has not been found in the Slate, but 

 its occurrence at Mackay, I. T., makes it altogether probable that it 

 belongs to our fauna. 



Trtcxalis brevkornis, Linn. — Occurs in the central part of the State, 

 but has not yet been found in the mountainous Northwest. 



Erritettix virgatiis, Scudd. — This species must be said to be rare. 1 

 have found it nowhere in the State except in a few localities about 

 Fayetteville. It is probably the first Orthopteron which reaches maturity 

 in the spring. As early as April fourth there were no pupae to be found. 



Syrbula admirabilis, Uhler. — This is a southern form, and by far 

 the most common of the Truxalinae. It is abundant \n old pastures. It 

 reaches maturity about the first of July. Brown females are much less 

 common than brown males, but they are not rare. 



Chloealtls conspersa, Harr. — An uncommon species, so far as my 

 observation goes. It is represented in my collections from Arkansas by 

 a single pair (male and female) of adult specimens and by three pupae. 

 These specimens were all taken early in J uly, and they were always found 

 about the head of wooded ravines in north-west Arkansas. AV^hen com- 

 pared with Illinois specimens these are seen to be larger, the male 

 measuring 25 mm. The female is noticeably different from northern 

 specimens in having the tegmina subacute and the sides of the head, pro- 

 notum and abdomen black or very dark fuscous. In the young the 

 antennas are more distinctly flattened basally than in the adult. 



Dichroinorpha viridis, Scudd. — This species is widespread, though 

 nowhere abuadint, and scarcely common. The brown is about as com- 

 mon as the green variety amongst the females. 



Orphula pcluinus, Burni. — Fhis species is the commonest Orphula 

 in the .State, though ic is not abundant or scarcely common in the north- 

 west. In the central and southern parts of the State it is abundant. 



Orphula specioSii, Scudd. — Tnis species is much more uncommon 

 than I had formerly supposed. I have found it in a few widely scattered 

 localities only. 



