22 THE BLATTIDAE OF PANAMA 



from which springs the sinistral style; distal margin from this point briefly convex 

 nearly to the small dextral style socket, the greatest convexity slightly dextrad of 

 the mesal point; dextral margin over half again as long as sinistral margin, likewise 

 straight produced and weakly declivent from its base. Sinistral style directed 

 mesad and nearly reaching dextral style; elongate, tapering from stout base to 

 slender cylindrical portion before apex, apex flattened and roundly angulato-pro- 

 duced caudad, with a projecting, straight, aciculate production at its ventro-distal 

 margin. 24 Dextral style minute, cylindrical with rounded apex, vertical, three 

 times as long as wide, about one-third as long as sinistral style. Limbs and arma- 

 ment of same typical for genus, as described under asenia. 



Allotype. — 9 ; Gold Hill, Canal Zone, Panama. November 14, 

 1913. (Hebard; in heavy vine overgrowth of low bushes.) [Heb- 

 ard Collection.] 



Agrees with type in all ambisexual characters. Supra-anal and subgenital plates 

 typical for genus, as described under asema.^^ 



Coloration antimony yellow and blackish chestnut. Head with occiput anti- 

 mony yellow shading to ochraceous-tawny on face, but with narrow vertical sufi"u- 

 sions of blackish brown from occiput along inner margins of eyes to ocellar areas. ^^ 

 Pronotum with lateral margins transparent buffy, two rather heavy parallel stripes 

 of blackish brown run from the cephalic to the caudal margin, these widening 

 slightly mesad and caudad, median area antimony yellow. Tegmina with marginal 

 and scapular fields and apex and adjacent margin of discoidal field to median vein, 

 transparent, tinged with antimony yellow to old gold; remaining portion of teg- 

 mina translucent, blackish chestnut brown, often with a minute point of the paler 

 color proximad in the anal field toward the costal margin. Wings hyaline, weakly 

 iridescent, washed weakly with prout's brown, appendicular field more heavily 

 washed with this color, area of costal veins and area at extremities of rami of axil- 

 lary vein bordering the appendicular field, heavily sufl"used with the same color. 



Measurements {in millimeters) 

 Type 



Allotype 5.6 1.7 2.2 5.9 2 



^* In consequence this resembles in outline the head of the Buffle Head Duck. The 

 paratypic males before us show the shape of the apex of this specialized sinistral style to be 

 variable, ranging from the form found in the type, through broadly enlarged with a disto- 

 ventral angulation, to weakly and roundly enlarged. 



2^ The females can be separated from those of other species of the genus by the form 

 of tegmina and wings, and their venation, and by the color pattern. Throughout the 

 genus it is these features which must be relied upon chiefly to separate the females of the 

 different species. 



^^ These evidently a continuation of the paired dark pronotal stripes. 



