JAMES A. G. REHN 
141 
depth contained one and two-thirds times in the length of the same; margins nar- 
rowly cingulate, except caudo-ventrad, where they are, as usual, greatly broad- 
ened, ventro-cephalic angle rounded rectangulate, ventral margin straight, ven- 
tro-caudal angle broadly rounded. Tegmina surpassing the apex of the abdomen 
and the tips of the caudal femora by a distance equal to about one-half the dorsal 
length of the pronotum, broad, the greatest width of the dorsal field, which is at 
five-eighths the length from the base, contained about two and two-thirds 
times in the length of the tegmina, lateral margins of the closed dorsal fields of 
the tegmina subparallel in proximal five-eighths of the tegminal length, the 
distal portion regularly narrowing thence to the apex : lateral field broad, sub- 
equal in depth for the greater portion of its length, narrowing briefly distad: 
mediastine vein with nine to eleven rami, the distal very faintly, the proximal 
ones appreciably, sigmoid; free veins at base of the lateral field five to six in 
number; humeral and discoidal veins of the type of structure found in A. 
manni: stridulating vein of the type found in manni but the angle is less de- 
cided, hardly more acute than a rectangle: anal and axillary veins of the type 
found in manni: oblique veins five in number, the proximal short, the second 
and third joined shortly before the junction with the stridulating vein, the 
second sinuate, the third arcuate, the fourth and fifth nearly straight, slightly 
divergent, coalescing at the proximal fifth in a supplementar}" node, the fifth 
oblique vein strongly and briefly arcuate distad, joining the diagonal vein 
shortly before the anal node : anal node large : diagonal vein arcuate proximad, 
straight thence, the latter section nearly longitudinal: postaxillary veins 
three in number, the sutural one but faintly arcuate, the second bent arcuate, 
the third moderately arcuate: speculum relatively smaller than in manni, in 
form more circular, its diagonal length but slightly greater than the width, 
margin of the speculum rectangulate proximad, a single obhque cross-vein 
present: distal area with four radiating rami of the median vein, the rami with 
numerous regular cross- veins, these less numerous proximad, more numerous 
distad. Wings very briefly surpassing the apices of the tegmina. Cerci 
reaching to the wing-tips, tapering, with a clothing of numerous short hairs and 
sparse, elongate, scattered hairs: subgenital plate as in manni. Limbs very 
short and robust, almost crab-like when flexed : tarsi with the third joint faintly 
more robust than in manni. Cephalic tibiae with a small, eUiptical foramen on 
the cephalic face, a larger elliptical one on the caudal face. Caudal femora not 
more than two-thirds as long as the tegmina, very broad, the depth contained 
about two and one-half times in the greatest length of the femur: caudal 
tibiae very short, not more than two-thirds as long as the femora; dorsal mar- 
gins each with four major spines, the intercalated spinulations reading distad 
2, 2, 0 on the external margin, the same or 1, 1, 0 on the internal margin; distal 
tibial spurs much as in manni, but the internal ones are slightly more robust : 
caudal metatarsi slightly more elongate proportionately than in manni; 
dorso-external margin with three, internal with two spinulations. 
Allotype. — 9 ; Same data as type. [Acad. Nat. Sci. Phila.] 
The following features are those of difference from the description of the 
male (type) sex. Size larger than in the male sex. Rostrum faintly broader 
TRANS. AM. ENT. SOC., XLIII. 
