194 FAMILY V.— ACRIDIIN^. 



veins mostly fuscous. Fore and middle femora only a little 

 tumid in the male; hind femora testaceo-ferruginous clouded 

 with fuscous above, particularly in broad basal, pre-median 

 and post-median patches, the geniculation mostly blackish- 

 fuscous, the lower genicular lobe pallid-testaceous with a 

 basal blackish bar, the inferior surface, especially externally, 

 flushed with roseate; hind tibiae bright red without, the 

 spines black almost to the very base, ten to eleven, rarely 

 twelve, in number in the outer series. 



Extremity of male abdomen as shown in Fig. 119. 



Length of body, male, 25 mm., female, 28 mm. ; antennae, 

 male, 9 mm., female, 8.75 mm.; tegmina, male, 25.5 mm., 

 female, 27.5 mm. ; hind femora, male and female, 14 mm. 



This is the well known "Rocky-Mountain Locust" 

 or " Destructive Locust." The insect is not native in our 

 state, but belongs to dry foot-hills on the eastern slope of 

 the Rocky Mountains. Many sad experiences have shown 

 that this insect can readily reach our state, however; and 

 cause untold losses, even driving the farmers away from 

 their homes. The life-history of this insect has been given 

 elsewhere, hence it is not necessary to repeat it here. 



Melanoplus Gladstoni Bruner. 



Very dark testaceous, much infuscated, especially above. 

 Head not prominent, luteo-castaneous, more or less clouded 

 or blotched with fuscous, above wholly fuscous, with a nar- 

 row, posteriorly broadening, testaceous stripe, following 

 the posterior edge of the eye and separating the vertex from 

 a piceousor blackish-fuscous post-ocular band ; vertex gently 

 tumid, very slightly elevated above the pronotum ; fastigium 

 steeply declivent, broadly sulcate throughout ; frontal costa 

 rather prominent ; eyes moderately large, not very promi- 

 nent. Pronotum subequal, feebly enlarging on the meta- 

 zona, ferrugineo-testaceous, much infuscated on the disk, the 

 lateral lobes with a broad, more or less distinct, dark, some- 

 times piceous band crossing the prozona above; disk nearly 



