148 NEW NORTH AMERICAN MELANOPLI (oRTHOPTERa) 



individually varying through mignonette green through chamois with a green- 

 ish tinge to tawny olive, becoming deeper dorsad and there shading evenly into 

 the occipital color, which is jade green individually varying to buffy olive, 

 always bordered on each side by a narrow suffusion of chamois. Genae same 

 color as face, a postocular band of jade green between this area and the pale 

 lateral margins of the occipital area. Occipital coloration extending caudad on 

 dorsum of pronotum as a very broad band of equal width to principal sulcus, 

 thence expanded to include the entire metazona which, however, in some 

 specimens becomes paler ventro-laterad. Medio-dorsal very broad band of 

 prozona broadly bordered on each side with chamois. Lateral lobes of pro- 

 notum with postocular band decidedly broadened, widest in caudal portion of 

 prozona, jade green with sometimes a median fleck of chamois, individually 

 varying to soUd ivy green; below this the lateral lobes are chamois, often with 

 ventral portion broadly suffused with the general coloration of the face (light 

 brownish olive or mignonette green) or of the metazona (buffy olive). Teg- 

 mina immaculate, individually kildare green to cress green. Exposed remaining 

 lateral portions of thorax green, with ventral portion of meta-epimerum and 

 all but narrow proximal portion of meta-episternum strikingly chamois. 

 Ventral portions and abdomen olivaceous or yellowish, the abdomen always 

 tinged with olivaceous distad. Cephalic and median limbs ochraceous-buff, 

 washed, often heavily, with mikado brown. Caudal femora mikado brown, 

 often with external face narrowly paler along the ventral margin and in proxi- 

 mal and distal portions, dorsal face individually clay color or cinnamon, 

 always showing two delicate, but distinct (though individually variable in 

 extent and intensity) and broad, transverse bands of olive. Caudal tibiae 

 lumiere blue (a rich blue, showing slightly more green than glaucous) ; spines 

 pale lumiere blue or white, with black tips. 



Specimens Examined: 35; 17 males, 17 females and 1 immature female. 



Texas: San Antonio, Cotulla, Robstown, Corpus Christi, Lake Lomalta in 

 Cameron County, and in the Big Bend region, Double Windmill, camp two 

 miles north of Bone Spring and Neville Spring. 



One male from Robstown and a series of seven males and nine 

 females from Corpus Christi, bearing the same data as the type, 

 may be considered paratypes. The entire series was taken by 

 Rehn and Hebard between July 29 and August 9, 1912. 



This remarkable insect, though showing a fairly wide distribu- 

 tion, was found other than singly but once. It is very local, 

 being almost entirely confined to joint-cactus, Opuntia species, 

 of the Cylindr opuntia group, in which heavily armed plant it 

 lives. It was almost impossible to drive a specimen into the open 

 unless the cactus was trampled down with heavy boots. In these 

 plants the insects were found to be extremely alert and quick to 

 dodge into the more sheltered recesses. When driven into the 

 open they displayed unusual leaping powers, and the males were 



