NO. 1630. THE DECTICINM OF NORTH AMERICA-CA UDELL. 341 



D'. Smaller, pronotum 7-8 mm. in length ; posterior femora deeply infus- 



cated apieally britneri, p. 343 



B^ Pronotum dorsally light yellowish, always lighter colored than the upper half 

 of the lateral lobes, which are infuscated ; size medium, pronotum about 

 8 or 9 mm., rarely 10 mm. in length. 

 C. Posterior femora slender, more than five times as long as the basal width ; 



lateral lobes well developed, fig. 44 nigromarg'mata, p. 346 



C''. Posterior femora stout, less than five times as long as the basal width ; 

 lateral lobes less developed ateloploide.% p. 350 



STIPATOR AMERICANUS Saussure. 



Orcliesficus amerirnnus Savssvre, Rev. Mag. Zool., XI, 1859, p. 201; Orth. Nova. 



Amer., I, 1859, p. 5.— Walker, Cat. Derm. Salt. Orth. Brit. Mns., II, 1869, 



p. 248.— ScuDDER, Can. Ent., XXVI, 1894, pp. 180, 183; Cat. Orth. U. S., 



1900, p. 76. 

 Stipator americamis Rehn, Trans. Amer. Ent. Soc, XXVII, 1900, p. 90. — Kirby, 



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

 Anabrm haldemauii Giraro, Marcy's Expl. Red River, 1853, p. 259, pi. xv, figs. 



5-8; 1854, p. 248, pi. xv, figs. 5-8.— Walker, Cat. Derm. Salt. Orth. Brit. 



Mus., II, 1869, p. 239.— Thomas, Ann. Rept. U. S. Geol. Surv. Terr., II, 



1871, p. 265; Can. Ent., XII, 1880, p. 223; Rep. U,S. Ent. Comm., II, 1881, 



p. 259.— Glover, 111. N. A. Ent., Orth., 1872, pi. vir, fig. 16. 

 Pterolepis haldemanll Thomas, Ann. Rept. IT. S. Geol. Surv. Terr., V, 1872, 



p. 441. 

 TJiyreonotxii haldemann Bruner, Publ. Nebr. Acad. Sci., Ill, 1893, p. 31. 

 SlipntorlicddejiiavuVimm, Trans. Amer. Ent. Soc, XXVII, 1900, ]>. 90.— Kirby, 

 • Syn. Cat. Orth., II, 1906, p. 183. 

 Tliyreonolm rraghn Bruner, Bull. Washb. Coll., I, 1885, p. 129; 1886, p. 196; 



' Publ. Nebr. Acad. Sci., Ill, 1893, p. 31. 

 Orchesticus craglnl Scudder, Can. Ent., XXVI, 1894, pp. ISO, 1S3; Cat. Orth., 



U. S., 1900, p. 76. 

 Stipator craghii Rehn, Trans. Amer. Ent. Soc, XXVII, 1900, p. 90. — Kirby, 



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



Description. — Head moderately prominent, no broader than the 

 front of the pronotum, into which it is quite deepl}^ set; fastigium 

 one-third as broad as the interocular space, scarcel}^ two times as 

 broad as one of the eyes; front but little convex; eyes medium in 

 size, moderately prominent, nearly round; antennne long- and slender, 

 much longer than the body. Pronotum large and ]iosteriorly much 

 produced over the base of the al)domen; lateral lobes well developed, 

 but not nearly as deep as long, nearly vertical, the posterior margin 

 strongly sinuous; lateral and median carinte wholly ab.senton the ante- 

 rior portion of the pronotum, on the posterior portion indicated more 

 or less plainly behind a transverse sulcus that crosses the disk some- 

 what behind the middle; pronotal disk rounded on the anterior por- 

 tion, behind the transverse sulcus, usually somewhat flattened, the 

 anterior margin truncate, posterior margin semicircuhirly rounded; 

 prosternal spines moderately long and slender. Wings lateral and 

 wholly concealed lieneath the pronotum in the female, in the male 

 much overlapping above and projecting somewhat beyond the pro- 

 notum. Legs long and stout; anterior tibiie armed above on the outer 



