MORGAN HEBARD OO 



length about one-fifth proximal width. Subgenital plate with lateral margins 

 feebly convex and weakly convergent to beneath cerci, thence straight to distal 

 portion, which is strongly V-emarginate, with sides of emargination convex, the 

 interval occupied by a mantle which is not chitinous, the apices of the plate tl]us 

 formed rather bluntly rounded, weakly acute-angulate, supplied with setae. 



Head with vertex cinnamon rufous, paling to ochraceous-buff toward labrum; 

 eyes tawny; ocellar spots buffy. Antennae mummy brown, except proximal joint 

 and ventral surface of succeeding joint which are buffy. Maxillary palpi with 

 proximal and third joints white suffused with mummy brown, fourth and fifth 

 joints white. Pronotum shining, lateral margins transparent, buffy; disk blackish 

 chestnut brown except for the following markings, cephalic margin very narrowly 

 warm buff with a brief linear median invasion of this color running into the disk, 

 just before the lateral margins of the disk are three small linear flecks on each side 

 of which the cephalic pair are the largest, linear and divergent caudad; in addition 

 there is a pair of similar linear flecks mesad, which are parallel, and a single fleck 

 mesad near the caudal margin. Mesonotum with a medio-longitudinal fleck of 

 warm buff, dark chestnut brown on each side, paler laterad. Metanotum dark 

 chestnut brown with a pair of warm buft' flecks caudad. 



Tegmina transparent, buft'y, except in portion from apex of anal field to distal 

 portion of costal margin, which portion is translucent, heavily washed with ochra- 

 ceous-tawny proximad, becoming weaker with less of an orange tinge distad; in the 

 proximal portions of the tegmina all of the veins, the anal sulcus and the area be- 

 tween the anal sulcus and the last of the veins of the anal field are chestnut brown 

 (the ulnar vein is obsolete before the apex of the anal field, this area resultantly the 

 largest of the transparent areas). 



Wings transparent, feebly suffused distad, veins chestnut brown, the half of the 

 costal veins toward the costal margin solidly chestnut brown. Dorsal surface of 

 abdomen ochraceous-tawny, except median segment which is dark chestnut brown. 

 Cerci with dorsal surface whitish, suffused along the internal margins with dark 

 chestnut brown. Coxae and ventral abdominal segments laterad with suffusions 

 of mummy brown, these forming a broad interrupted band on each side of the 

 abdomen, the remaining portions of which are bufty. Limbs buffy; dorsal surfaces 

 of femora and tibiae washed with mummy brown, ventral margins of femora (fre- 

 quently in the series) tinged with mummy brown, this heaviest on the caudal femora; 

 all spines faintly tinged with tawny, a minute delicate fleck of mummy brown at the 

 base of each. 



The female sex of this species is very similar in coloration. The dorsal surface of 

 the abdomen is frequently suffused with chestnut brown laterad and caudad, the 

 third segment with latero-caudal angles briefly buft'y. 



It is to be noted that numerous features of color pattern and coloration are of 

 great specific diagnostic importance in the species of the present genus. 



The immature condition is widely different in coloration from the adults and from 

 the immature condition of angiistata. In these the lateral margins of the fifth 



MEM. AM. ENT. SOC, 4. 



