322 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxu. 



1877, p. 83; Ent. Notes, VI, 1878, p. 24.— Walker, Cat. Derm. Salt. Orth. 

 Brit. Mus., II, 1869, p. 246.— Smith, Rep. Coiin. Bd. Agric, 1872, (1872) 

 p. 380; Cat. Ins. N. J., 1890, p. 411.— Comstock, Intr. Ent, 1888, p. 118.— 

 Fernali), Ann. Kept. Mass. Agric. Coll., XXV, 1888, p. 110.— Orth. N. E., 

 1888, p. 26.— Davis, Ent. Amer., V, 1889, p. 80.— Blatchley, Proc. Ind. 

 Acad. Sci., 1892, (1894) pp. 151-152. 

 Atlanticus dorsalis Scudder, Can. p]nt., XXVI, 1894, pp. 179, 180, 183.— Cat. Orth. 

 IT. S., 1900, p. 75.— Psyche, IX, 1900, p. 104.— Beutenmuller, Bull. Amer. 

 Mus. Nat. Hist., VI, 1894, p. 285, pi. vi, fig. 8.— Blatchley, Orth. Ind., 1897, 

 p. 23.— Smith, Ins. N. J., 1900, p. 162.— Kirby, Syn. Cat. Orth., II, 1906, 

 p. 181. 



Description. — Head of moderate size, not swollen, quite deeply set 

 into the pronotiim; fastig'ium broader than the basal segment of the 

 antenna, about one-third as broad as the interocular space; front 

 transversely convex; eyes moderate, nearly round and moderately 

 prominent; antennte long and slender, basal segment large, broad and 

 strongly depressed. Pronotum large, posteriorly much produced, in 

 the female entirely covering the wings; lateral lobes well developed 

 but scarcely as deep as long, slanting moderately outward, the poste- 

 rior margin distinctly sinuous; lateral carina^ sharp and distinct, 

 converging very moderately in the anterior fifth and then considerably 

 expanding to the posterior margin of the pronotum; median carina 

 absent or very dimly present posteriorly; pronotal disk slightly con- 

 vex, the anterior margin truncate, posterior margin broadly rounded, 

 marked just behind the middle with a l)road, shallow, transverse sulcus, 

 sometimes scarcely visible; behind this transverse sulcus the surface 

 is not so smooth as anteriorly. Prosternai spines of variable lengths 

 but alwa\^s present and well developed. Legs stout; anterior coxal 

 spines sharp, slightly recurved and basally flattened; posterior femora 

 more than two times as long as the pronotum, much swollen on the 

 basal half and usually armed below on the inner carina with a few 

 small spines, sometimes unarmed; posterior and intermediate tibi{\; 

 armed above and below on both margins; anteri(n- til)i<e armed above 

 on the outer margin only with three spines and on both margins below 

 with several spines. Organs of flight completely concealed beneath 

 the pronotum in the female, in the male overlapping above and pro- 

 jecting beyond the pronotum a distance usually less than the anterior 

 width of the pronotum, the tympanum Avell developed but mostly 

 concealed beneath the posterior portion of the pronotum. Supraanal 

 and subgenital plates and the cerci of the female as described under 

 the genus; cerci of the male armed about the middle on the inner side 

 with a short stout spine, that portion of the cercus beyond the tooth 

 about three times as long as the basal width; ovipositor straight, 

 shorter, or rarely as long or a little longer, than the po.sterior femora, 

 the lower margin straight, the upper margin obliquely cut off apically, 

 bringing the organ to a moderately sharp point (fig. 26). 



General color quite uniformly })rownish, the posterior margin of the 

 lateral lobes of tlie pronotum sometimes, l)ut not always, yellowish 



