406 N. C. AGR. EXP. STA. BUL. 239 
Holotype male and two females, Rio Mamore, approximately 10 km. east of 
San Antonio, Beni Province, Bolivia, August 11 (male) and 13 (females), 1965 
(J. K. Bouseman); two females, same data except Rio Mamore at mouth of 
Rio Ibare, August 20, and August 15-16 (AMNH). Two males, Las Juntas, 
Bolivia, December, 1913 (Steinbach) (CM). One male and one female, 
Huachi, Beni, Bolivia, August (female) and September (male) (W. M. 
Mann), Mulford Biological Expedition, 1921-22 (USNM). The last two speci- 
mens have the enlarged corial dark stripe described above and also an ob- 
lique black line in the middle of each clavus, differing in this from all other 
specimens examined. 
In addition to the above, females appearing conspecific, and all with the 
enlarged corial stripe, are at hand from Satipo, Peru (MCZ); Colonia Perené, 
Peru (Cornell University); Pachitea, Peru; and Vilcanota, Peru (HNHM). 
I. montana, n. sp., is very similar in appearance to J. diversa (Signoret) from 
which it is readily distinguished by the form of the aedeagus and the para- 
physes of the male and by the form of female abdominal sternum VII which 
bears emarginations in dtversa. 
Iragua nubila, NEW SPECIES 
FIGURE 327, PAGE 404 
Length of male 10.3-10.5 mm, of female 10.6-11.0 mm. Head with median 
length of crown varying from three-fourths to almost nine-tenths interocular 
width and from one-half to slightly more than one-half transocular width, 
ocelli approximately equidistant from median line (holotype) and adjacent an- 
terior eye angle or slightly nearer latter, ocellocular area striate; antennal 
ledges in lateral view with anterior margin rectilinear. Pronotum obscurely 
transversely rugulose; forewing with texture coriaceous. Male with style ex- 
tending posteriorly approximately as far as apex of connective, apex as in J. 
montana, n. sp. Aedeagus with apex of shaft membranous and convex, with or 
without a pair of dorsal processes arising before and extending beyond apex 
(fig. 327f), apical portion of shaft with a strongly sclerotized rod traversing 

FIGURE 329.—Iragua vallis, n. sp. (f, A, from specimen from Olivenga, 
Amazonas; 1 from topotype; A from lateral view). 
