FAMILY v.— ACRIDlIN^. 203 



A number of this species occurred with spretus during 

 the local outbreak of the Rocky-Mountain Locust in Otter 

 Tail county in 1889. 



Melanoplus luridus Dodge. 



Rather small in size, brownish fuscous, more or less fer- 

 ruginous. Head not at all prominent, dull pallid testaceous, 

 feebly flecked with fuscous, above with widening dull fus- 

 cous stripes and a narrow post-ocular band; vertex gently 

 tumid, slightly ornot at all elevated above thepronotum ; fas- 

 tigium steeply declivent, plane, with well elevated and round- 

 ed lateral margins ; frontal costa just failing to reach the cly- 

 peus, subequal, sulcate at and below the ocellus, biseriately 



Fig. 128 — Melanoplus luridus, male. Original. 



punctate above ; eyesof moderate size, not prominent. Pro- 

 notum sub-equal, feebly and gradually enlarging posteriorly, 

 the disk nearly plane, passing by distinct but abruptly 

 rounded shoulders forming sub-obsolete lateral carinte into 

 the vertical lateral lobes, which have only an obscure, rarely 

 a distinct, dark post-ocular band, always limited to the pro- 

 zona; median carina percurrent but blunt and a little ob- 

 scure on the prozona. Prosternal spine short, conical, blunt, 

 erect, in the female a little appressed. Tegmina reaching or 

 a little surpassing the tips of the hind femora, moderatly 

 narrow, very gently tapering, brownish-fuscous, either 

 scarcely or distinctly though feebly maculate in the proxi- 

 mal part of the discoidal area. Fore and middle femora 

 tumescent in the male; hind femora long and slender, 



