408 N. C. AGR. EXP. STA. BUL. 239 
spots and colors as in montana, but with membrane narrower at apex; linear 
markings of corium as in typical montana but with posteriormost two lines 
reddish-purple in some specimens; face and venter tan to gray. 
Holotype male, Peru-Brazil Frontier, February 14, 1928; one female, Rio 
Ucayali, Peru, December 2, 1923; one male, December 24, 1925, two females, 
January 14, 1926 and December 26, 1925, and one specimen without ab- 
domen, August 28, 1927, all from Achinamiza, Peru [Loreto Province, near 
Santa Cruz]; one female, Rfo Santiago, Peru, September 23, 1924 (AMNH). 
One male, Bogota, Colombia (L. Richter) (NCS). 
The Colombian specimen has a relatively shorter head, compared to the 
Peruvian specimens, and the apex of the aedeagus varies from the typical con- 
dition, but otherwise appears to belong with the other specimens. 
I. nubila, n. sp., can be readily separated from other species by the 
aedeagus of the male which is slender and more elongate than other species 
except J. estella (Distant), which lacks the elongate unpaired basal portion of 
the paraphyses and the apical spots of the forewings. 
Iragua vallis, NEW SPECIES 
FicurE 329, PAGE 406 
Length of male 9.6 mm, of female 9.4-10.3 mm. Head with median length 
of crown varying from eight-tenths of to approximately equal to interocular 
width and from slightly more than one-half to almost six-tenths transocular 
width, ocelli approximately equidistant from adjacent anterior eye angle and 
median line of crown, ocellocular area striate; antennal ledges not or weakly 
carinate dorsally, anterior margin rectilinear. Pronotum transversely rugulose; 
forewing with texture coriaceous. Male with style extending posteriorly 
slightly farther than apex of connective, apex as in J. montana, n. sp. (above); 
aedeagus short and very broad for the genus, apical portion of shaft with me- 
dian sclerotized internal rodlike process as in J. nubila, n. sp. (above) (fig. 
329f ); paraphyses with stalk as long as paired rami which are curved postero- 
ventrad in lateral view, obliquely truncate at apex and with oblique margin 
erose, broader anteapically than in other species of the genus. Female ab- 
dominal sternum VII not keeled medially, with posterior margin well pro- 
duced and rounded or narrowly notched apically. 
Crown, pronotum, scutellum, clavus and an adjacent contiguous longi- 
tudinal portion of corium extending almost as far towards costal margin as 
vein M, black, remainder of corium yellow basally, with a broad transverse 
orange band over apical portion including apical and most of anteapical cells, 
apical cells suffused with orange, apical black spots as in montana but inner 
spot wider, extending through inner apical cell and onto appendix, mem- 
brane narrower at apex than in montana; linear black markings of corium as in 
typical montana; face, venter, and legs, pale yellow to gray. 
Holotype male and three females, Fontebéa, Upper Amazon; one female 
and one specimen without abdomen, Tonantins, Amazonas (RMS). 
I. vallis, n. sp., differs externally from other species in the genus in the 
broad median black stripe on its forewings in rest position. The male 
