108 FAMILY V.-GROUSE LOCUSTS. 



This is one of our most common species, found from 

 April to late in September; it hibernates among rubbish and 

 loose bark, but is more or less active during warm days. It 

 is very common on the sandy shores of Lake Superior. It 

 varies greatly in color and markings, some having a very 

 distinct bright j^ellowish dorsal stripe extending from tip to 

 tip. The insect, and two varieties, are shown in Fig. G3. 



Tettix ornatus Say. 



The name ornatus expresses well the appearance of this 

 fine insect, which has numerous styles of ornamentation. 

 Perhaps the name is a collective and not a specific one. 

 Morse unites with or/iaius the triangularis of Scudder, which 

 differs from it by having the pronotum slightly extending 

 beyond the tip of the abdomen and not prolonged into a 

 slender point as in ornatus. The pronotum is very variable 

 in length, in some reaching the end of the hind femur, in 

 others passing it by 3.5 mm.; the wings are equally vari- 

 able, and usualU' least developed proportionally in those 

 specimens with the shortest pronotum. It is impossible to 

 draw any line between these two forms, although the typi- 

 cal forms are quite distinct. 



The species is readily recognizable from the characters of 

 the vertex. This projects in front of the eyes, is somewhat 

 rounded anteriorK' and the mid-carina forms a distinct pro- 

 jecting tooth. The profile is rounded-angulate above, ex- 

 cavate opposite the eyes and protuberant opposite the an- 

 tennae. Very rarely a specimen is met which in a dorsal or a 

 profile view approaches granulatus closely, but an^- doubt 

 of its identit}' is usually dispelled by an examination of it 

 from both directions. 



Measurements. — Length of body, 9 to 10 mm.; pro- 

 notum, 9 to 11 mm.; posterior femora, 5 mm. 



