9 
TAB. LXIY. 
LOCUSTA grisea. 
Gray Locust. 
Class 5. Insecta. Order 2. Orthoptera. 
Gen. Char. Feelers long, last joint subclavate, 
truncate at the end. Antennce very long, se- 
taceous. Oviduct ensiform. Posterior thighs 
formed for leaping. 
Spec. Char. Thorax behind carinate, rounded. 
Body brown. Elytra cinereous, spotted. Ovi- 
duct falcate, pale at the base. 
Syn. Fab. Ent. Syst. Em. ii. 41. 31. 
We have adopted Olivier’s order Orthoptera, because we 
conceive that insects which bite their food are essentially 
distinguished from those that take it by suction. This 
order includes such of the Linnaean Hemipterous Genera 
as are furnished with maxilla: ; viz. Blatta, Mantis, and 
Gryllus, leaving in Hemiptera those insects only that take 
their food by means of a rostrum. The learned Scopoli, 
led by this circumstance, had long since united the above 
genera to Coleoptera ; but from that order they are evidently 
distinct, not only on account of the different substance of 
the elytra, but likewise by the mode in which they fold 
their wings; Coleopterous insects folding them transversely, 
while those in question fold them longitudinally. Olivier’s 
characters of the two orders Orthoptera and Hemiptera are 
as follows : 
