104 COLOMBIAN DERMAPTERA AND ORTHOPTERA 



formed about twice as broad as long, its form weakly suggesting bilobation; 

 the plate bears latero-distad scattered hairs on the dorsal surface and a fringe 

 of stouter hairs directed cephalad near the distal margin on the ventral surface ; 

 proximad of these the ventral surface is raised dextrad in a heavy ridge from 

 which projects a stout, heavy, rounded process directed meso-proximad and 

 armed with a few short, sharp teeth. Cerci slender with (11 to' 12) well- 

 defined joints. Concealed genitalia: the very brief , recurved genital hook is 

 situated sinistrad, from beneath the dextral projection of the supra-anal plate 

 projects a narrow, chitinous lobe, while along its inner surface is a slender, 

 elongate, channeled, chitinous projection, surrounded by a soft whitish mantle. 

 Subgenital plate roughly subquadrate, scoop-shaped; sinistral portion curled 

 dorsad with margin concealed, distal margin broadly concave, oblique and 

 moderately produced dextrad, there rounding into the dextro-lateral margin 

 which is broadly concave distad, thus forming a bluntly triangular production 

 with surface moderately reflexed and concave; proximordextral portion curled 

 dorsad, the margin concealed. Mesad in the sinistral concavity of the distal 

 margin is situated a slender, straight, gently tapering, hairy style with apex 

 rounded and dorsal surface supplied with a few minute, but rather stout, teeth 

 directed distad; at the apex of the roundly triangular dextral production is 

 situated a short, heavy, blunt, conical style, supplied distad with a few blunt 

 teeth. Limbs elongate, their armament, pulviUi and arolia normal 2^; the 

 ventro-cephalic margins of the cephalic femora having a series of heavy proxi- 

 mal spines and a series of minute, distal, closely set, piliform spines. 



Allotype. — 9; same data as type, but taken August, 1916. 

 [Hebard Collection.] 



Very similar to male, differing in the following features. Size somewhat 

 larger, form generally similar but with abdomen broader. Tegmina and wings 

 fully as elongate. Dorsal surface of abdomen unspecialized. Supra-anal plate 

 with lateral margins straight, weakly oblique to median two-fifths of the plate, 

 where a subrectangulate production, about twice as wide as long, occurs, with 

 distal margin broadly convex, this production suggesting a simplified miniature 

 of the homologous production in the male. Subgenital plate broadly scoop- 

 shaped, lateral margins straight, parallel in very brief proximal portion, thence 

 rounding broadly into the very broadly and evenly convex distal margin. 

 Measuremenls {in millimeters) 



Head shining blackish chestnut l)rown, mouthparts paler, ocelli conspicu- 

 ously light buff. Pronotum shining ])la('kish chestnut l)rown with lateral 

 margins narrowly translucent warm buff, this contiiuied without int(>rrupti()n 



23 See Mem. Am. Ent. Soc, No. 2, p. 62, (1917). 



