120 
COLOMBIAN I)EKMAPTEIL\ AND ORTHOPTERA 
Size medium larKe, form slender. Interocular sjjace narrow, about one- 
third as wide as that between antennal sockets, four-fifths as wide as inter- 
ocellar space. Ocelli large and distinct, flattened surfaces of ocellar areas 
forming a moderately sharj) angle with interocellar area. Maxillary palj)i 
moderately short; fifth joint very slight longer than third. Latero-caudal 
sulci of pronotal disk pronounced. 
Tegmina and wings extending beyond apex of abdomen nearly one and 
(me-half times cereal length. Tegmina elongate and narrow, with i)ortion 
of de.xtral tegmen, concealed when at rest, transparent, though slightly 
suffused. Dorsal surface of abdomen si)eciahzed as is characteristic of the 
genus. 
8upra-anal plate trapeziform })rotluced, with latero-caudal angles broadly 
rounded and margin betw'een weakly concave, all but the margins of the 
large produced portion weakly chitinous; subchitinous in a small meso- 
proxiinal area, just caudad of which the ventral surface of the plate is pro- 
duced in a small rounded subconical i)rojection, this jirojection about half 
as high as its basal width and crowned with a tuft of stout bristles, which 
are two-thirds as long as the proximal width of the jn'ojection; margins of 
l)late fringed along the ventral surface with similar but shorter bristles and 
with a cluster of minute spines near the base of the dextral cercus.*^ Paired 
plates beneath su])ra-anal plate highly s])ecialized; sinistral plate large, trans- 
verse, produced medio-longitudinally in an elongate, convex ridge, this plate 
armetl dorso-jiroximad with a i)atch of minute but stout, short, sharp spines; 
dextral plate large, transverse, with caudal surface convex, the ventral i)or- 
tion thickened, rounded, its ventral surface armed distad with a large patch 
of minute but stout, short, sharp spines. At basal segment of sinistral 
cercus with an elongate flagelliform process, develoj^ed from its internal 
face, this slenderly cylindrical, chitinous, curving across beneath the supra- 
anal j)late to the median line, there curving ilownward and finally curved 
cauilad before its acute apex. At basal segment of dextral cercus with a 
heavy and much shorter flattened ])rocess directed sinistrad, then bent at 
its median point ventro-sinhstrad, the distal half slenderly lanceolate, straight, 
with apex acute. Subgenital ])late. hairy, strongly asymmetrical, surface 
convex except in produced ])ortion, where it is moderately concave; with 
lateral portions vertical, the free margins thickened and curling narrowly 
inward proxiniad; dextral portion of free margin broadly convex to median 
third oi j)latc, which is weakly convex, then nearly transverse to sinistral 
third, which section is moderately concave; at the weakly defined apex is 
Described iii Mem. Am. Ent. Soc. no. 2, p. ()2, (11)17). 
" Examination of the type show's that this also occurs in (jatunae. 
"’ll! gdlmtae the concealed genitalia are developed in the same general 
manner, but the dorso-sinistral i)rojection is very much shorten', the ])atch 
ot s])ines on the sinistral {)late is larger and situated ine.so-distad, while the 
much higher spc(‘ialization of the suj)ra-anal ])late causes the dextral plate 
to be very much smallei', no jeatch of sj)ines occurring on this j)late. 
TUANS. AM. KNT. SOC., XIAJI. 
