Bruner : Soi in American Locusts. 485 



Head a little wider than the anterior edge of the pronotum, the 

 occiput smooth, well rounded and slightly elevated above the plane 

 of the pronotum; eyes prominent, subglobose, tin- i>reater diameter 

 plainly exceeding the length of the anterior edge of the chi 

 rated on the vertex above by a space scarcely if anj greater than the 

 diameter of the basal antennal joint; fastigium subhorizontal, flat, 

 aboul as long as wide, separated from the frontal costa by a transverse 

 elevated ridge or carina; frontal costa prominent between the antenna', 

 viewed laterally evenly rounded, its sides parallel to just below the 

 ocellus, where it becomes much narrower and inconspicuous to the 

 i the clypeus, plane above, sulcate below; front rather closely 



Space between meso- and meta-sternal lobes transverse. Hind femora rather 

 slender, their apex about equalling that of the abdomen, genicular lobes slightly 

 acuminate, the hind tibia; six-spined externally, eight-spined internally, the first 

 and second joints of their tarsi subequal; legs, and in fact the entire body, rather 

 strongly hirsute. Antennae filiform, about as long as the hind femora. 



" Color quite gaudy; the head and pronotum dull black with a greenish tinge in 

 some lights, conspicuously marked with dull orange on the head, the lower edges of 

 the cheeks, the lateral carinae of face, the frontal costa, a considerable portion of 

 the clypeus, sides of the mandibles, a dot back of the middle of each eye, the disk 

 of the fastigium and a V-shaped mark on the occiput just back of the vertex, on 

 the pronotum a large patch near the middle of each lateral lobe and one at center of 

 k both in front and behind; upper half of the pleura and dorsum of the abdo- 

 men nearly to its tip dull black; below flavous, inclining to dull orange. Tegmina 

 on their basal two-thirds metallic blue-green with a faint longitudinal discal streak 

 of flavous, the apical portion brownish, semi-membranous. Wings vitreous, 

 slightly infuscated apically and towards the posterior border. Hind femora oli- 

 vaceous, varied with flavous internally and below, on the disk externally the pinnae 

 brownish, genicular area and immediate base of tibia; red, the remainder of the 

 latter dull cinereous, becoming infuscated apically and at the extreme apex together 

 with their tarsi coralline. Anterior and middle legs dark flavous with faint traces 

 of fuscous annulations. Antennae fuscous tinged with red, the extreme apex pallid. 



"Length of body, 9. 24.5 mm., of pronotum, 4 mm., of tegmina, 15 mm., of 

 hind femora, 12.5 mm. 



"This insect so far as its coloration and wing length are concerned seems to be 

 more closely related to Zosperamerus than it is to Anniceris, although its relatively 

 much shorter hind tarsi remind one of the latter genus and Leioscapheus of Central 

 America. Evidently a careful study of all the forest-dwelling locusts of middle 

 America will bring to light a large number of additional species and genera of this 

 group. 



" Adelotettix gen. nov. 



"A genus of moderately large, coarse dull colored locusts related to both Abila 

 and Adimantus but quite distinct from both of these genera in a number of respects 

 as may be seen by reference to the following diagnosis: 



