OCR Text |
Show 236 very broadly and shallowly silicate, most distinctly in the male; frontal costa broad and equal, very faintly punctate, with a scarcely perceptible narrow sulcus below the ocellus; antenna? slightly infuseated at the tip. Pronotum shaped as in the preceding species, but more distinctly tumid on the dorsum of the anterior lobe, the middle transverse sulcus nearly as close to the posterior snlcns as to the short one in front of it, and the posterior lobe fully three- quarters the length of the anterior; posterior margin angularly rounded ; median carina, as in the preceding species, marked in form like all the transverse sulci; dorsum mottled with dark brown, the lateral carina) marked with a more or less distinct narrow yellow stripe; the anterior margin of the deflected lobes clear yellow or pallid; prosternal spine straight, small, conical, bluntly pointed. Tegmina rather broad, ovate, overlapping, the tip scarcely produced, fully naif as long as the abdomen, brownish fuscous, marked with yellow longitudinal veins, and flecked, principally along the median area, but also elsewhere, with longitudinal series of subquadrate blackish fuscous spots; wings a little shorter than the tegmina. Hind femora stout and full, yellow, the outer face marked with alternate, narrow, angnlate, yellow and black stripes, often fainter in parts than in others, so as to show a tendency to transverse bands arranged as in P. jucundus; outer arc of genicular lobes broadly black ; hind tibia? yellow, the apical half of the spines black; arolium of either sex as in the preceding species. Abdomen yellow, the upper portion infuscated, the middle of the dorsum marked frequently with a series of approximate, subdorsal, roundish, black spots, often inclosing white spots nearly as large as themselves, those « of opposite sides separated only by a slender yellow line; the abdomen of the two sexes has the peculiarities of that of the preceding species, the last joint of the male being also entire: the anal cerci of the male scarcely differ from those of that species, the slender apex only being a little less suddenly contracted. Length of body, £, ^ o^ nxm; $, 24mm; of antennro, <?, 9.25mra; 9, 7.5ram; of pronotum, <? b* lum; $, 6.9 ™ '"; tegmina, $, 8.25mm; $ ,. 10.75mm; of hind tibiae, $, I2.5mro ; $ , 13.5mm. 25 $, 48 $ , Santa Barbara, Cal., July 1, No. 1005, H. W. Henshaw; LDS Angeles and Santa Barbara, July, No. 224, C. J. Shoemaker. 24. Pezottetix pictus Thorn.- 1 £ , 1 $ , plains of Northern New Mexico, eastern slope, October 14- 31, Lieut. W. L. Carpenter; Northern New Mexico, August, September, Lieut. W. L. Carpenter. This highly interesting species should be referred to a distinct genus; it is unique in structure and coloration among the species of this group of Acridians. 25. Hesperotettix Hridua ( Thorn.) Scudd.- 1 <?, Mojavo Desert, California, No. 829, Dr. O. Loew. 26. Gomphocerus clepsydra Scudd.- A single female of this species, originally described and hitherto only known from British America, was taken in Southern Colorado June 11- 20, Lieut. W. L. Carpenter. 5 <£ wore also taken at the same place and time, and in Northern New Mexico, August to September, by Lieut. W. L. Carpenter. As this sex has not been knowu, the following description is appended: Head pale brownish yellow, excepting on the summit and sometimes on the cheeks, where it is yellowish brown, more or less tinged with reddish; a pair of moderately broad, arcuate, blackish streaks, sometimes obsolete excepting in front, run from the middle of the summit of the eye to the back of the head above the lateral carina; of the pronotum; fastigium. of vertex depressed, flat, separated from the lateral foveolte by a distinct ridge, that of one side meeting the other at a little less than a right angle; lateral foveolse distinct, depressed, forming a slightly arcuate, oblong parallelogram, at least three times as long as broad, the inner extremity rounded; frontal costa a little narrowed above, otherwise nearly equal, punctate, silicate below and for a slight distance above the ocellus; antenna more than twice as long as the pronotum, testaceous, the club black, composed of five or six joints, the middle ones but slightly larger, though much more depressed, than those of the stalk. Pronotum dark yellowish brown, the lateral carinas as distinct as the median carina, arcuate, twice as close together just in advance of the middle as at the posterior extremity, pallid, edged exteriorly and especially in front with black, and interiorly on the posterior lobe with the same; lower portion of deflected lobe with an anterior blackish triangle, the longest side facing upward and forward, followed behind by a slender yellowish stripe, directed a little downward and sometimes edged above with black. Tegmina reaching the tip of the abdomen with the costal field broad, pellucid, the nervulcs scalariform; the remainder testaceous, with minute faint fuliginous clouds in the more or less pellucid middle field. Hind legs long and slender, the femora generally more or less marked longitudinally with black along the upper exterior carina. Sides of the abdomen marked with black on the basal half of each segment. Length of body, 18 mm; of antenme, 9 mm; of pronotum, 4.1ro, n; of tegmina, 12.85 mm: of hind tibhe, 12 n, m. This species seems to be allied to G. clavatu* Thorn., but differs from the description of that species in many important particulars. 27. Gomphocerus navicula, nov. sp.- Pale dull brownish yellow, the upper surface of the head and pronotum darker; summit of the head with a delicate, straight, black |