OCR Text |
Show 287 line running from midway between the extreme summit of the eye and the medio- dorsal carina to the back of the head, midway between the dorsal and lateral carina, and edged - within by an entirely similar yellowish or roseate line ; both these lines scarcely taper anteriorly ; there is a slight but distinct medio- dorsal carina extending from the back of the head throngh the fastigium, where it is more distinct,, to4ts very tip ; the lateral carinse of the fastigium are equally distinct, and together form a U ; lateral foveolse wanting ; frontal costa slightly narrowed above, otherwise nearly or quite equal, punctate, bel low the ocellus a little sulcate; antennte less than twice as long as the pronotum, brown, the club duskier, made upof seven or eight joints, occupying fully a quarter of the antenna, fusiform, and in the male distinct. Pronotum with the lateral carinas as distinct as the median carina, a little arcuate, only a fifth nearer each other a little in advance of the middle, than at the posterior border, pale yellow, narrowly edged within throughout and without in the middle with black; sides of the deflected lobes with an arcuate, yellow, black- edged streak extending a little below the middle from the anterior sulcus to the hind border. Tegmina extending to the tip of the abdomen, the costal field (<?) somewhat expanded beyond the middle, with oblique subscalariform' nervules, the remainder (<? $ ) testaceous, with longitudinal fuscous, subconfluent streaks in the middle area; wings with the apical nervures slightly thickened and blackish. Hind femora moderately slender, the upper outer carina more or less edged beneath with blackish fuliginous; tibia* yellow, with spine black on the apical half. Length of body, < J, 14.75B, ni; 9, 18.5mm; of antennas, $ ,5.5mro; 9 15.4mm; of pronotum, < J, 3.25mm. 9t 3.8 ™ ™ ; of tegmina, < J, 10.5 ™ ™ ; 9,12.5 ™ m; of hind tib © , £, 8 ™ ra; 9i 9 ™ m. 2 <?, 19 > Southern Colorado, June 11- 20, Lieut. W. L. Carpenter; Northern New Mexico, August to September, Lieut. W. L. Carpenter. This species bears most resemblance, among, species known to me, to the preceding, from which it is readily distinguished by the much shorter antennae, the want of lateral foveolae on the vertex, and the lesser curvature of the lateral carinas of the pronotum. 28. Dociostaurus ornaius, nov. sp.- Pale brown, above darker; an arcuate row of fuscous dots from the posterior extremity of the- fastigial carina) to the back of the head midway between the dorsal and lateral carime of prothorax, and a similar straight row from the middle of the posterior edge of the eye backward; fastigium rather deeply sulcate posteriorly with a low median carina, the lateral carinas prominent, meeting at an acute angle . in front; lateral foveolse very distinct, pretty large, snbquadrate, a little longer than broad, the lower edge horizontal; frontal costa much narrowed above, nearly equal below, shallowly but broadly and abruptly sulcate throughout, and punctuate; antenna? dark brown, becoming duskier toward the tip, the apical joints slightly enlarged. Pronotum slightly convex anteriorly, broadly an-gnlated nosteriorly. the lateral carina) as distinct anteriorly as the median carina, thickened posteriorly, very strongly arcuate, so as to be fully twice as distant at the posterior border as a little in advance of the middle, edged outwardly with black on the anterior lobe and front part of posterior lobe, and interiorly more broadly on the front part of the posterior lobe; deflected lobes, marked, with dark colors and especially with a subcentral, quadrate, blackish fuliginous spot. Tegmina longer than the body, the costal area subpellucid, the rest testaceous, with a longitudinal row of conspicuous fuliginous and blackish fuliginous spots in the median area. Hind femora sparsely dotted externally with blackish fuscous along the edges, above showing signs of clustering into spots, and on the upper surface a median spot crossing the upper carina and bordered distinctly with black on the outer side; there is also an oblique black basal streak, and an apical and subapical fuscous spot; hind tibiie clear pale yellow, the spines black- tipped. Length of body, 12.5mm; of antennte, 5.3mm; of pronotum, 2. b'mm; of tegmina, 11.8mm; hind tibise, 7.1m, n. 1 J, Northern New Mexico, August to September, Lieut. W. L. Carpenter. In North America, the ( Edipodidw are far more abundantly represented than any other group of Acridians. The present collection is rich in novel forms, and affords also the opportunity of continuing my efforts to reduce the known species to symmetrical relations. The following table, partly based upon that by Stal ( Recens. Orthopt., I), has accordingly been prepared for the readier determination of the genera; it is intended, however, to apply only to the genera mentioned in this paper, and even only to such species of these genera as are catalogued. Doubtless, it may have a wider application but in its preparation no species were examined but those mentioned below. |