NO. 1580. THE DECTICINJ^ OF NORTH AMERICA— CA UDELL. 847 



In the central United States the Yoiino- of nigromarginata probably 

 issue in May and mature in July. Professor Isely writes me that the 

 nymphs make no attempt to escape capture by leaping-, but onl}" by 

 running-. This seems almost incrediljle in yiew of the well-deyeloped 

 posterior femora, which are certainly better fitted for leaping- than for 

 running. 



STIPATOR NIGROMARGINATUS var. GRISEIS, new variety. 



Description. — Differing quite distinctly from the tj'pical form in 

 being light gray in color. The dorsum is somewhat lighter than 

 the upper part of the lateral lobes, as in typical specimens. It is a 

 good color form and is worthy of a varietal name. 



Mea-mrements. — Length, pronotum, male, 7.5 mm., female, 8.5; 

 posterior femora, male, 21, female, 2(3; ovipositor, 20; width, posterior 

 femora at the base, male, 3.75, female, 4.5. 



Tt/pe.— Cat. No. 10171, U. S. National Museum. 



Speeimrns e.cainined. — One male, one female, Haigler, Nebraska 

 (Carriker), and other specimens in the Bruner collection. 



STIPATOR GRANDIS Rehn. 



Sttpator grnndh Rehn, Proe. Acad. Nat. 8ci. Thila., 1904, i>p. 544, 545. — Kieby, 

 Syn. Cat. Orth., 11, 1906, p. 183. 



De^^crlption. — Head quite large and prominent; fastigium promi- 

 nent, about as broad as the length of one of the rounded and moder- 

 ately prominent eyes; antenna; long- and slender. Pronotum large, 

 extending well back over the base of the abdomen; lateral lobes 

 longer than high and moderateh' slanting, the posterior margin mod- 

 erately sinuate; carin* not indicated, neither lateral nor median, the 

 disk uniformly rounded, usuall^y slightly broader posteriorly; pos- 

 terior margin semicircularly rounded, anterior margin truncate. 

 Prosternal spines long and sharp. Wings wholly concealed beneath 

 the pronotum in the female, in the male projecting slightly, as in amer'i- 

 can ui<. Anterior tibite armed above on the outer margin onl}" with three 

 spines; posterior femora more than two times as long as the pronotum 

 and much swollen on the basal tliree-tifths, armed ])eneath on the inner 

 carina with seyeral short, sharp l)lack spines; anterior femora armed 

 below on the inner carina with a few short stout black spines, the 

 middle femora sometimes with one or two similar ones. Abdomen 

 moderatel}" heav}', usually more slender than that of ai)ier/'ea/ins av\d 

 scarcely carinate. Cerci of the male about four times as long as the 

 basal width, and furnished on the inner side near the middle with a 

 heavy sharp tooth as long as the cereal width at that point, like that 

 of var. iiiftigiiis (fig. 45). Cerci of the female simple, acute, and about 

 the same relative length as those of the male. Ovipositor variable in 



