210 FAMILY VI. ACRIDIDJE. THE LOCUSTS. 



The range of S. admirabiUs is given by McNeill as "United 

 States east of the Rocky Mountains, extending as far north as 

 Nebraska and northern Illinois, and on the Atlantic coast to 

 Maryland." It is not recorded from New England, Iowa or Mich- 

 igan, but has been taken in central Ohio. It is known from Penn- 

 sylvania and New Jersey, and occurs most commonly south and 

 southwest from the latter State, having been recorded as far at 

 least as Victoria, Texas (Caudcll, 1903, 781) and La Trementina, 

 New Mexico. Morse (1907, 28) says that it "is one of the com- 

 monest and most generally distributed locusts in the South, oc- 

 curring most abundantly among grasses in dry stations and waste 

 places." In Virginia Fox (1917) records it as: "A frequent and 

 widely distributed species in old neglected fields and pastures, 

 especially those overgrown with Andropogon and other coarse and 

 dry grasses; less commonly found in open woodland scrub." The 

 only account of its stridulation which can be found is by Allard 

 (1916) who says: "The male is rather musical, producing a weak, 

 lisping stridulation at intervals s-s-s-s s-s-s-s-s-s-s, by sawing the 

 hind femora upon the edges of the tegmina." 



II. EKITETTIX Bruner, 1890, 56. (Gr., "heath" + "grasshopper.") 



Species of small size having the head conical, horizontal ; ver- 

 tex triangular, broader than long, its sides raised and apex ob- 

 tusely rounded; occiput with three carinae, one median and two 

 supplementary, the latter often feeble, extending from pronotum 

 to opposite front margin of eyes and there bending and joining 

 the lateral carinre of vertex; foveolre present below the vertex, 

 small, subtriangular, not visible from above; frontal costa rather 

 wide, sulcate, with sides feebly diverging from slightly above the 

 ocellus downward ; antenna? not reaching base of pronotum, flat- 

 tened toward base, enlarged toward apex; pronotum tricarinate 

 and also often with a pair of supplementary carina?, all cut by the 

 principal sulcus distinctly behind the middle ; disk with hind mar- 

 gin feebly obtuse-angulate, prozona twice as long as metazona; 

 lateral lobes about as wide as long, their front and hind margins 

 slightly oblique, lower one with front half distinctly ascending; 

 hind femora rather stout, extending beyond tip of abdomen ; apical 

 inner spur of hind tibire more than twice as long as the one ad- 

 joining; subgenital plate of male conical, obtuse, ascending; ovi- 

 positor with valves scarcely exserted. 



A North American genus to which Kirby accredits eight spe- 



