142 COLOMBIAN DERMAPTERA AND ORTHOPTERA 



Size large for genus. Antennae with first joint rounded rectangular, longer 

 than broad, showing a feeble, longitudinal, proximal dorso-internal carina and 

 bearing a decided, distal dorso-external spine."- Head with occiput gibbous, 

 bearing three pairs of spines, the mesal pair largest, decided (length, 1.9 mm.), 

 with a few small spines at bases, in addition there is a small pair of spines cau- 

 dad of the antennal sockets, with a depressed area between these, and mesad 

 on each cheek a stout spine, while other irregularly placed, small spiniform 

 nodes occur. Pronotum subquadrate, with four spines on the cephalic margin, 

 of which the two mesad are the smaller, a single small spine on the lateral 

 margins above a small coxal spine, and a transverse row of four decided spines 

 near the caudal margin, of which the two mesad are the largest. Mesonotum 

 elongate, decidedly wider caudad than cephalad, lateral margins straight, 

 divergent caudad; mesonotum with a pair of elongate, heavily spined processes 

 (spiniform and not lamellate as in many species of the genus) (length 6.4 mm.), 

 springing from a raised saddle near the caudal margin, these processes curving 

 dorso-laterad, cephalad of these are two median pairs of equidistant moderate 

 spines, between which is a pair of more widely spaced elongate spines (length, 

 2.2 mm.), while laterad near the lateral margins is a series (four and five) of 

 widely spaced, smaller and somewhat irregular spines. The metanotum bears 

 two pair of widely spaced, similar spines and two similar spines laterad near 

 each lateral margin. The median segment is appreciably broader than long, 

 and bears meso-dorsad near its caudal margin a pair of moderate spines 

 (length, 1.9 mm.) with spinulae at their bases, in addition to two well-spaced, 

 smaller spines mesad on each side. The first dorsal abdominal segment is 

 similarly armed except that the meso-dorsal pair of spines is smaller and there 

 is an additional spine at each latero-caudal angle. The succeeding dorsal 

 abdominal segments to the sixth are similarly armed, with meso-dorsal pair of 

 spines increasingly robust, those of the fourth, fifth and sixth segments form- 

 ing rather twin spinose lamellate processes, the meso-lateral spines decrease in 

 size distad, the spines at each latero-caudal angle increasingly robust to the 

 eighth segment, those of the fourth and fifth forming lamellate plates each 

 projecting as two triangles, of the sixth and seventh similar but horizontal 

 (in normal position) and of the eighth forming a much larger, irregularly roun- 

 ded lamellate plate. Meso-dorsad the seventh segment is supplied with small 

 twin spines, the eighth and ninth with minute twin nodes, the meso-lateral 

 spines are present as nodes on the seventh and obsolete on the eighth and 

 ninth segments. 



The ninth dorsal abdominal segment has its distal margin made up of large 

 acute-angulate projections with apices rounded, a line drawn through these 

 being convex. Between the sixth, seventh and eighth dorsal al)dominal and 

 its corresponding ventral segment, specialization of the soft integument 

 evidently occurs; this is too shrivelled in the present specimen to describe 

 accurately. Mesopleurum and metapleurum with a row of spines, the former 

 with a supra-coxal swelling bearing three longer spines. Prosternum with a 

 spine on each side just caudad of the insertion of the liml). Coxae and other 



'2 Other portions of antennae missing in this specimen. 



