JAMES A. G. KEIIN 
131 
Oecanthus pictipes new species (Plate III, figs. 19, 20 and 21.) 
A very striking and distinct species of the genus, which differs, 
at least from all the jireviously known American forms, in the 
distinctly and rather closely pimctulate limbs, the annulate an- 
tennae and the j^aired dark postocular lines on the head, while 
the small size, the structure and pattern of the two proximal 
antennal segments, the short and broad pronotum and the greatly 
aborted wings will assist in the recognition of the species. 
Type. — cf; Natal, State of Rio Grande do Norte, Brazil. 
(Stanford Brazilian Expedition; W. M. Mann.) [Acad. Nat. 
Sci. Phila., Type no. 5330.] 
Size very small: form as usual in the genus. Head moderately elongate, 
subdepressed; interocular region with an impressed, transverse, obtuse- 
angulate sulcation, the arms of the angle weakly arcuate; inter-antennal 
section moderately elongate, subequal in width, moderately bullate; palpi 
with the third and fourth joint subequal in length, the fifth joint longer than 
either of these, slender, cylindrico-fusiform : eyes moderately prominent, acute 
pyriform in basal outline: antennae with the proximal joint relative large, 
subdepressed, internal face with a distinct bulbous swelling. Pronotum rela- 
tively short, the greatest length but slightly greater than the caudal width, 
when seen from the side the dorsal line is straight; the disk broadly rounds 
laterad into the lateral lobes; cephalic margin of the disk moderately arcu- 
ate, caudal margin of same bisinuate-truncate: surface of the disk smooth 
cephalad, in caudal half with a distinct, but short, medio-longitudinal impres- 
sion, laterad of which are faintly more decided, equally long, but arcuate im- 
pressions, the curve of the arcuation laterad; when seen from the dorsum the 
pronotum is appreciably constricted very shortly cephalad of the caudal 
margin : lateral lobes of the pronotum distinctly longer than deep, the greatest 
depth at the caudal third, near which point the pinching-in of the lobes is most 
decided; ventro-cephalic angle of the lobe hardly indicated, broadly arcuate- 
obtuse; ventral margin oblique, regularly arcuate; ventro-caudal angle 
broadl}' rounded rectangulate. Tegmina of medium width, the greatest 
breadth of the dorsal field contained about twice in the greatest length of 
the same: lateral field broad, strongly reflexed ventro-mesad, the greatest 
width of the field at the distal third; costal margin in general straight except for 
verj^ brief pro.ximal and much more extensive distal arcuations; mediastine 
vein with eight rami, these remote distad and rather crowded proximad, the 
distal ones sigmoid, the proximal ones more simple arcuate oblique; humeral 
vein following closely the curve and position of the mediastine vein, the area 
separating the two very narrow, at about the distal fourth the humeral vein 
is obtuse-angulate, from whence it follows, at a greater distance than else- 
where, the oblique tendency of the mediastine vein, the point of angulation 
connected with the discoidal vein by a very short cross nervure; discoidal vein 
separated from the humeral vein by a relatively broad area, the vein straight 
TRANS. AM. ENT. SOC., XLIII. 
