76 THE BLATTIDAE OF PANAMA 



Pronotal disk with latero-caudal sulci very pronounced, as in /. mca Saussure and 

 Zehntner. Tegmina and wings extending beyond apex of abdomen nearly twice 

 the cereal length. Wings with well developed intercalated triangle. Dorsal sur- 

 face of abdomen specialized, as is characteristic of males of the genus, with the 

 exception that the raised portion of the seventh abdominal segment is unusually 

 large, horse-shoe shaped, with dorsal surface deplanate and subchitinous. 



Supra-anal plate very highly specialized; strongly produced, straight, directed- 

 caudad with a moderate inclination sinistrad, extending to distal portion of sinistral 

 cercus, the produced portion about twice as long as broad, curled over longitudi- 

 nally sinistrad so that the sinistral portion of the free margin is ventrad, the dorsal 

 surface there longitudinally convex, bordered dextrad by a shallowly concave chan- 

 nel, beyond this deflexed so that the dextral portion of the free margin is ventrad in 

 the produced portion of the plate; sinistral margin straight, curving upward distad 

 to the brief transverse distal margin, supplied with a heavy fringe of agglutinated 

 chaetiform spines which distad project beyond the distal margin; distal margin 

 straight, subchitinous, moderately oblique, the greater production of the plate 

 being sinistrad; dextral margin showing a strong subcircular emargination sinistrad 

 of cereal base, thence nearly straight along produced portion of plate, showing a 

 moderate oblique inclination sinistrad in proximal half, this weaker in distal half, 

 the dextro-caudal angle rounded and supplied with moderately numerous hairs. 

 From the shape of the produced portion of the supra-anal plate nearly a third of the 

 dextral portion of the anal chamber is exposed from above. Cerci with (eleven) 

 distinct joints, feebly convex dorsad, strongly so ventrad with cingulation of lateral 

 margins very weak, subobsolete as is usual in the small species of the genus. 



Concealed genitalia: without dissection we can only observe that the paired 

 plate beneath the supra-anal plate is flattened into a chitinous wall cephalad, from 

 which projects at the base of the dextral cercus a minute upcurved process with apex 

 aciculate, beneath which is a short heavier projection armed along its dextral mar- 

 gin distad with four minute but heavy and regular teeth. 



Subgenital plate subtriangular; sinistral margin feebly convex to apex, showing a 

 small concavity slightly beyond the mesal point, from a socket there situated 

 springs a very minute simple style feebly tapering to its unarmed rounded apex, 

 slightly over twice as long as basal width, dextral margin slightly more strongly 

 convex, apex surmounted by a highly specialized (the dextral) style, which latter 

 from a slender base projects caudad to a rounded apex, its entire sinistral surface 

 produced in a feebly tapering cylindrical arm which curves sinistro-proximad and fits 

 within the distal portion of the production of the supra-anal plate, the distal portion 

 of this arm supplied with minute scattered teeth (see plate IV, fig. 13)- Arma- 

 ment of limbs as characteristic for the genus. Four proximal caudal tarsal joints 

 supplied ventro-distad with moderately well developed pulvilli. Arolia very small. 



Head shining, very dark chestnut brown, ocelli, mouthparts and proximal joints 

 of maxillary palpi buffy, the two distal joints of the maxillary palpi heavily washed 

 with chestnut brown. Antennae dark chestnut brown. Pronotum shining, uni- 

 form dark chestnut brown. Tegmina translucent, heavily suffused with chestnut 

 brown except in portion of costal field toward costal margin which is paler, buffy. 



