12 THE ACRIDIIDAE OF MINNESOTA 
this Division, collected by Lugger. In forms intermediate between 
this species and 7. granulatus we have taken it at Detroit, Mahtomedi, 
and Crookston. Because of the close similarity of the two species as 
mentioned above and the constant occurrence of intermediate forms it 
might be more logical to consider these as not specifically distinct but 
rather as extremes of a variant species. 
Tettix ornatus Say. 
In Tettix ornatus the eyes are prominent and the anterior margin 
of the vertex is rounded, with the median carina strongly projecting. 
It is more robust than in the preceding species, with the pronotum 
less prolonged and with the median carina less elevated, though dis- 
tinct ; coloration is variable, though normally grayish, with the dorsum 
marked with four velvety blackish spots. Like T. granulatus it is 
found in two forms and to the short or abbreviated form, once known 
as T. triangularis Scudd., the varietal name triangularis is sometimes 
applied. This species is less confined to banks and shores than the 
preceding species and is at times found far out in woodlands or in fact 
almost anywhere on sandy soils. In early spring and late fall it may 
be observed in numbers on sunny exposures, such as rocks or even the 
cement walks of cities, evidently enjoying the warmth of the sun’s 
rays. We have taken this species at Worthington, Redwood Falls, 
Pipestone, Mankato, Ortonville, St. Anthony Park, Mahtomedi, Fergus 
Falls, Crookston, Warroad, Bemidji, Cass Lake, Hibbing, Tower, 
Mesaba, Duluth, and Hinckley. It is known to occur throughout east- 
ern North America. 
In connection with this species we must note 7. acadicus Scudd., 
which is closely related to it and most readily distinguished from it 
because the median carina of the vertex is more prominent anteriorly 
and the body is shorter. Since this species was described by Scudder 
from specimens taken at Lake of the Woods, doubtless at or near 
Warroad, and has also been recorded by Lugger from St. Anthony 
Park, it is almost certain that it is included in the series listed above, 
but we were unable to distinguish among them any which could be 
positively referred to this species. 
Tettix hancocki Morse 
Tettix hancock is closely related to 7. ornatus, from which it may 
be distinguished by the more robust form and more strongly elevated 
pronotal carina and the more enlarged posterior femora. In surface 
granulation and color it is very similar to T. ornatus and does not differ 
