320 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



In the Scudder collection is an immature dectician without label, 

 neither date nor locality, but presumably from the United States as it 

 is associated with other material belonging to our fauna. It is a female, 

 and by the development of reversed and elongately pointed wing pads 

 is obviously the } f>uiig of some long-winged species. The prosternum 

 is unarmed, and the ovipositor is distinctly curved upwards. These 

 characters prohibit its reference to Capnohotes, and so. unless it is some 

 foreign species mixed in with the native forms, it is probably a nymph 

 of the present species. If so, the ovipositor of Anojjlodma is seen to 

 be curved upwards instead of downwards as in Capnobotes. 



ATLANTICUS Scudder. 



Engoniaspis Brunnek, Ann. Mus. Civ. Stor. Nat. Genova, XXXIII (2d ser., 

 XIII), 1893, p. 185 (invalid, no species included). — Scudder, Can. Ent., 

 XXVI, 1894, pp. 177, 179 (invalid, no species included).— Guide N. A. Orth., 

 1897, p. 56 (invalid, no species included).— Cat. Orth U. S., 1900, pp. 

 75, 96.— KiRBY, Syn. Cat. Orth., II, 1906, p. 181. 



Atlanticus Scudder, Can. Ent., XXVI, 1894, pp. 177, 179.— Guide N. A. Orth., 

 1897, p. 55; Cat. Orth. U. S., 1900, p. 75.— Blatchley, Orth. Ind., 190.3, 

 ]). 392.— KiRBY, Syn. Cat. Orth., II, 1906, p. 181. 



Description — Head of medium size, not prominent; eyes nearly round, 

 moderately prominent; vertex moderately prominent, about one-third 

 as broad as the interocular space. Pronotum large, posteriori}^ much 

 produced over the base of the abdomen; disk broadl}^ rounded, pos- 

 terior margin rounded or subtruncate, anterior border truncate; lat- 

 eral lobes well developed, but not ;jo deep as long, separated from the 

 disk by sharp and persistent lateral carina?, in one species less sharp 

 but still distinct; median carina absent or bluntly indicated on the 

 posterior margin. Prosternum armed with two spines, usuall}^ long 

 and sharp, but sometimes shorter and less acute. Elytra rudimentary 

 and wholly concealed beneath the pronotum in the female; in the 

 male strong!}" convex and projecting somewhat beyond the pronotum 

 and overlapping above. Legs moderately stout; posterior femora 

 variable in length, varying according to species, much and abruptly 

 swollen on the l)asal half and unarmed, or armed below on the inner 

 carina with a few short spines; anterior tibia^ armed above on the 

 outer carina only with three spines; posterior tibiic furnished below 

 with four apical spurs. Subgenital plate apicall}^ deeph^ cleft in the 

 female, in the male very shallowly cleft and terminated by a pair of 

 oblong rounded stN'les; supraanal plate small, triangular and apically 

 more or less l:»roadly rounded in both sexes, usually inconspicuous; 

 cerci rounded in both sexes, simple in the female, in the male armed 

 on the inner, side with a tooth; ovipositor straight or, in one species, 

 sometimes curved gently upwards. 



Type. — Decticus pachy-ineruH Burmeister. 



