194 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



Lateral lobes of pronotum large, cephalic margins straight to the 

 distinct but broadly obtuse-angulate ventro-cephaHc angle, thence 

 straight to the broadly rounded ventro-caudal angle which is ap- 

 proximately rectangulate, caudal margin distinctly convex to the 

 distinct humeral sinus, convex callosity very broad. 



jMacropterism is very rare in the present species, 11 of over 

 5C0 adult specimens at present before us represent this condition. 



The genicular areas of the caudal femora are not infuscated; 

 the genicular lobes of the same are unispinose; the ventral mar- 

 gins of the caudal femora are unarmed. 



The ovipositor length is as follows: Mount Airy, Pennsylvania, 

 17.7-23.1; Fern Hill, Pennsylvania, 19.4-28.1; Marshall County, 

 Indiana, 20.1-21.8; St. Louis, Missouri, 20.9-21.3; West Point, 

 Nebraska, 17.7-22.8;"Dodge City, Kansas, 17.9-22.6; Dickinson, 

 Texas, 21.2-25; Beeville, Texas, 25.2-32.3; Sycamore Canon, 

 Baboquivari Mts., Arizona, 19.7-24.4 mm. The ovipositor usu- 

 ally shows a very weak curvature but in occasional specimens it 

 is almost absolutely straight. Nowhere in the series of the pres- 

 ent genus before us is the variability in ovipositor length more 

 strikingly illustrated, for the range in length is from 17.7 to 32.3, 

 showing a variation of 14.6 mm. The material before us shows 

 that in some localities the species develops an ovipositor averag- 

 ing longer or shorter than in others, but the fact is also proven 

 by this material that nowhere in the wide distribution of the 

 species does a recognizable geographic race occur, or even a form 

 which might usually be distinguishable, in spite of the wide range 

 of ovipositor length. 



On the Atlantic coast the species is known from Staten Island, 

 New York, south to Newbern, North CaroUna; westward it 

 has been taken as far north as southwestern Minnesota, other 

 westernmost records being Hot Springs, South Dakota; Kearney, 

 Nebraska ; Syracuse, Kansas, and Cisco, Texas, while on the Rio 

 Grande it has been taken at Brownsville and Del Rio, Texas. 

 In the mountain regions of the arid southwest the species is 

 again found (Marathon, Texas; Mesilla, New Mexico, and the 

 Baboquivari Mountains, Arizona), and it will almost certainly 

 be found to have a wide range over the highest portions of north- 

 ern Mexico and for some distance along the Gulf coast of that 

 country. 



