138 COLOMBIAN DERMAPTERA AND ORTHOPTERA 



pronotum more decided than in the species of the genus Poro- 

 stagmatoptera at hand. The antennae are distinctly serrate, but 

 not strongly so, as described for the male sex of lohipes and shown 

 in males of Parastagmatoptera before us. 



The generic position is easily recognized by the slight but dis- 

 tinct, rounded lobe distad on the ventro-caudal margin of the 

 caudal femora,®^ confusion alone being possible with Paroxyopsis, 

 in which genus the eyes are said to be more produced laterad. 

 This lobe is much less strongly developed in colombiae than in 

 lohipes. 



The marginal field of the tegmina agrees more nearly with 

 Parastagmatoptera serricornis Kirby^^ and P. unipunctata (Bur- 

 meister)^^ than it does with males of the other species of that 

 genus at hand, but narrows more suddenly than in either of these. 



Type. — cf ; Santa Marta, Magdalena, Colombia. December 

 26, 1910. [Hebard Collection, Type No. 463.] 



Size small for the group, distinctly smaller than lohipes; form slender. 

 Head strongly transverse, width nearly two times depth, front distinctly con- 

 cave, the eyes and adjacent portions of the head directed moderately latero- 

 cephalad; occipital outline weakly concave between the weakly arcuato- 

 elevated juxta-ocular sections; ocelli well developed, arranged in a triangle; 

 facial scutellum nearly three times as broad as deep, dorsal margins weakly 

 concave-ascendent to blunt median obtuse-angulation. Eyes showing very 

 faintly a meso-lateral angulation. Antennae with joints serrate. Pronotum 

 with margins supplied with numerous widely spaced, minute, microscopic 

 teeth; collar comprising about one-fourth total pronotal length, distinctly 

 constricted before the supra-coxal dilation; supra-coxal dilation decided, with 

 sulci conspicuous. The tegmina reach to apices of cerci and are slightly sur- 

 passed by the wings; stigma present, small, longitudinal, linear; marginal field 

 rather broad proximad, narrowing rather suddenly before median portion of 

 tegmen. Supra-anal plate triangular, length half proximal width, subchitinous 

 toward the bluntly rectangulate apex. Cerci scarcely four times as long as 

 supra-anal plate, proximal joints fused for one-third cereal length, remaining 

 eight joints distinct, the ultimate joint bluntly rounded distad. Concealed 

 genitalia complex, resting in the produced subgenital plate; two large lobes, 

 from beneath the sinistral of which project three specialized processes. Sub- 

 genital plate produced, length nearly twice proximal width; moderately con- 

 vex mesad, the lateral and distal portions subdeplanate, this widest latero- 

 distad; slightly constricted proximad, the lateral margins subparallel, weakly 

 convex, the convexity increasing distad to the styles, between which the mar- 

 gin is transverse and less heavy in structure. Styles set in sockets on distal 



®^ In the tyi)e the median limbs are missing. 



«« Icf, Feren^', Peru, [A. N. S. P.]. 



•^ Icf, Embaroacion, Salta, Argentina, [A. N. S. P.]. 



