122 
COLOMBIAN DERMAPTEIL\ AND ORTHOPTERA 
Size large for the genus, form decidedly slender, more slender than in 7. 
vulpina llebard. Head with interocular space very narrow, its width slightly 
over one-quarter of a millimeter, half as wide as interocellar sjiace and apju-e- 
ciably wider than in anguslifrons. Ocelli and maxillary jialpi as here described 
for flageUifer. Pronotum narrower than in angustifrons, much as in flagellifer, 
with latero-caudal sulci of disk j)ronounced. 
Tegmina and wings decidedly elongate, sliglitly more elongate and slender 
than in angustifrons, venation as characteristic of the genus, as is the speciali- 
zation of the dorsal surface of the abdomen. 
Supra-anal plate broadly tra])eziform produced with lateral portions con- 
vex, chitinous, cur\ing moderately ventrad, the large median portion not 
as much raised, subchitinous, rectangulate, with length slightly greater 
than breadth, the distal free margin transverse. This plate bears on its 
ventral surface sinistro-proximad a marginal ridge armed with moderately 
elongate chaetiform spines, a fringe of similar s]iines being also present prox- 
imad along the ventral surface of the dextral margin. Paired plates be- 
neath siijira-anal plate at basal segment of sinistral cercus iiroduced tlex- 
trad in an elongate heavy jirocess, which tapers evenly to the acute apex, its 
dorsal surface subchitinous,*® sinistral plate below this moderately large and 
unarmed in visible portions.*® Plate at ba.se of dextral cercus, as described 
below, similar to homologous sinistral plate, t)ut somewhat heavier and en- 
tirely chitinous'-®; dextral jilate developed into four digits, the first and 
ventral developed into an elongate cylindrical clubbed jirocess with apex 
armed with short shari) teeth, above this a very slender chitinous flagelliform 
jirocess which curves ventrad across the surface of the remaining section of 
the plate, this latter portion j^roduced dorso-mesad in a heavy clubbed jiro- 
cess with apex armed with short sharj) teeth, the dorsal margin of this portion 
dee]>ly concave between the two clubbed ])rocesses and thus accomodating 
the flagelliform jjrocess®*; above these the plate surrounds the cereal base as 
*’ In angustifrons the ventral surface of the supra-anal plate is supi)lied 
proximo-laterad with similar chaetiform spines, meso-sinistrad in the area 
of least chitinization with a heavy tuft of similar spines, directed caudad and 
slightly dextrad of the median line, with a weak irregular ridge distad bearing 
a moderate number of similar si)ines. 
*® In angustifrons the homologous ])rocess is smaller and bears a large sharji 
spine dorsad at end of i>roximal two-thirds, while from the soft integument 
above i)rojects a delicate but chitinous, curved sjjine. 
*® In angustifrons much larger, with a few heavy teeth meso-dorsad. 
**** In angustifrons t his i)rocess is forked, the lower portion heavy and rounded, 
bearing a distal S})ine, the upi)er i)ortion irregiilarly curving dorso-dextrad, 
then caudad, then dextrad, taj)ering so that it is very slender in distal half, 
with apex acute. 
'-* In angustifrons this plate is largely concealed, but ai)i)arently is not 
• leveloped into armed processes. 
