JAMES A. G. REHN 233 



subgenital plate strongly asymmetrical, form shown in figure. Limbs elon- 

 gate, depressed, a dorsal genicular spines present on the median and caudal 

 femora, none on the cephalic femora. Cephalic femora armed on the ventro- 

 cephalic margin as described under the genus, of the distal spines the proximal 

 is the shorter, the proximal portion of the same margin unarmed in the type, 

 ventro-caudal margin with three spaced spines on distal half; median and caudal 

 femora with margins well and regularly spined; tibiae with spines triseriate; 

 caudal tarsi faintly shorter than the caudal tibiae, very slender, caudal meta- 

 tarsus exceeding the remaining joints in length. 



Allotype. — 9 ; Chinandega, Nicaragua. (C. F. Baker.) [Acad. 

 Nat. Sci. Phila.] 



The following features are those of difference from the description of the 

 male sex. Form shorter and broader than in the male. Interspace between 

 the eyes slightly more than one-half of the greatest thickness of the eye. 

 Pronotum with oblique impressions hardly indicated. Tegmina much shorter 

 than in male, surpassing the apex of the abdomen by hardly more than one- 

 half the length of the pronotum, short lanceolate, greatest width contained 

 two and one-half times in the greatest length; apex of tegmina slightly broader 

 than in the male; marginal field slightly narrower than in male; structure of 

 tegmina more coriaceous and with venation less apparent, particularly in the 

 discoidal and anal fields. Wings hardly surpassing the apex of the abdomen. 

 Supra-anal plate transverse, trigonal, distinctly U-emarginate mesad, not 

 tectate; subgenital plate moderately ample, margin arcuate with a faint 

 median obtuse-angulation. 



General color pale maize yellow with a strongly contrasted dark pattern of 

 mahogany red to chestnut-brown. This dark pattern is distributed over the 

 dorsal surface as follows: a pair of broad, marginally sinuate diverging bars 

 defining the pronotal disk laterad, enclosing an equally broad pale central 

 area and never reaching the cephalic and rarely reaching the caudal margin of 

 the pronotum; entire anal and discoidal fields of the tegmina, aside from a nar- 

 row elongate reniform sutural area in the anal field; dorsal surface of the abdo- 

 men with the exception of a pale marginal edging and scattered pale points. 

 Head with a dark bar between the eyes at their point of greatest proximitj', 

 occasionally this is subobsolete; occiput varying from uniformly pale to bearing 

 four fine dark longitudinal lines; eyes blackish fuscous, rarety ochraceous (not 

 normal?) ; antennae with ventral surface of proximal and third and following 

 joint blackish fuscous, the whole of the distal section becoming the same shade; 

 face with a dark pattern of sinuate transverse lines, which are sometimes so 

 solidly united as to make a dark background with a pattern of pale maize 

 yellow spots, or again the pattern is subobsolete. Pronotum %\'ith the lateral 

 sections subhyaUne; margins of the dark bars, which latter expand in width 

 caudad, always undulato-sinuate. Tegmina with the marginal and scapular 

 fields subhyaline, washed with maize yellow; the border of dark area toward 

 the costal margin subsinuate mesad, following the sutural side of the hmneral 

 trunk on proximal fourth and crossing to distinctly on the costal side on re- 

 mainder of tegmen; pale ar(!a in anal field subhyaline. Wings having the veins 

 fuscous except along the costal margin, where they are maize yellow. Abdo- 



TRANS. AM. ENT. SOC, XLII. 



