ORTHOPTERA. IO ; 



times assumes the migratory habit, and is sometimes injurious to 

 agriculture. 



2. Dictyophorus. This genus is represented by a very large and 

 clumsy locust, which occurs in the southern part of our country, 

 D. reticuldtus. The adult is yellow and black ; the tegmina and 

 wings are shorter than the abdomen ; the base and disk of the wings 

 are red, with the outer margin black. Length of body in female 

 about 60 mm. (2.4 in.), in male 50 mm. (2 in.). The nymphs of this 

 species differ remarkably from the perfect insect, being of a very deep 

 metallic bronze-green color approaching black, marked with yellow, 

 deepening into red in spots, or wholly with blood-red ; this is most 

 conspicuous in a slender dorsal stripe the whole length of the crea- 

 ture, and on the hinder edge of the pronotum. I found these 

 nymphs very ab.undant in May at Jacksonville, Fla. 



3. Pezotettix. To the genus Pezotettix belong a considerable 

 number of short-winged locusts, of medium or small size. More 

 than forty species have been found in the United States, but nearly 

 all of these are from the Far West or from the South. The mem- 

 bers of this genus, according to Brunner, with but few exceptions, 

 prefer cool and shady localities, and hence are often found among 

 or near rocks, on mountain slopes, in clearings or on the outskirts 

 of timber belts, and in meadows. 



The only species of Pezotettix that has been taken at Ithaca in 

 considerable numbers,/*. Scudderi, occurs among scattered trees, on 

 the crests and slopes of our highest hills. This species can be easily 

 recognized by its close resemblance in form and appearance to the 

 Common Red-legged Locust, Meldnoplus femur-nlbrum. The only 

 conspicuous difference is in the organs of flight : in P. Scudderi the 

 wing-covers do not extend beyond the second abdominal segment. 



In Pezotettix glacidlis the wings and wing-covers are wanting. 

 This species inhabits the mountains of New England ; it has also 

 been taken at Ithaca, N. Y. 



Pezotettix plctus is the brightest colored of all our locusts. It is 

 bluish green, with bright red and yellow markings, and is found on 

 the plains sloping eastward from the Rocky Mountains. 



4. Meldnoplus. We have many species of locusts, which belong 

 to this genus, Some of them are among the most common and 

 most destructive members of the family Acridiidae. Much has 

 been written concerning them ; but as most writers have believed 

 that they belong to the genus Caloptenus, it will be necessary to 



