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[October 
appendage, then suddenly diverges from it, at an angle of about 100° or 110° 
with its former course, till it attains i the distance to the tip, then suddenly 
angles off to the tip, which is acute, in a straight line, which, at § of the dis¬ 
tance from the last angulation to the tip, has a slight emargination in it followed 
by a very small tubercle. The inferiors extend § as far as the superiors, and 
are yellowish at their origin, horizontally flattish, wider apart at base than the 
superiors, tapered regularly and slowly, almost at right angles to the abdomen 
for I their length, when they curve inwards and upwards and terminate in an 
obtuse point with a minute spine at its tip directed upwards. Legs black ; fe¬ 
mora with short promiscuous spines, hind femora also with a double row of 
spines, gradually longer towards the tip and longest a little before the tip. 
Anterior femora with a ^'posterior” yellow vitta slightly abbreviated at base. 
In one immature % all the femora are yellowish except superiorly.” Knees 
spotted with yellow above; tibiae above with a slender basal yellow vitta. In 
the immature ^ the base of the tarsal claws is pale. Wings hyaline, veins black, 
the costal vein conspicuously yellow in front to the tip of the pterostigma. 
Pterostigma ranging from dark reddish brown to very pale reddish brown in 
the immature %, and surmounting 3^—4^ cells. Membranule moderate, whit¬ 
ish. Antecubitals 9 12—15; postcubitals 9 1^—13 ; two discoidal areo- 
lets 9 ’ always commencing with three both in front and hind w,ing. 
- The 9 differs as follows:—Is^. The occiput is laterally nearly quite straight, 
but rises suddenly in its middle J in two confluent curves, Avhich however are 
scarcely elevated above the line of the eyes. 2nd. At each end of the vesicle of 
the vertex, adjoining the eyes, there is a slender acute yellowish thorn, as long 
as the second joint of the antennse. 3rd. The double row of thorns on the hind 
femur has the longest ones in its middle, where they are twice as long as the 
longest on the femur. 4tk. The basal of the tarsal claws, and more conspic¬ 
uously so in the hind legs, is rufous, otk. The pterostigma is pale reddish-brown 
in the mature specimen.—The 9 abdominal appendages are fuscous, elongate- 
conical, slightly curved outwards and upwards near the tip, and terminating in 
a slender thorn; the anal processes are yellow, the superior one half as long as 
the appendage, the inferior a little longer j the superior one semicircular, the 
inferior one transversely semi-oval and slit lengthways to its base. The vulvar 
lamina is yellgwish fuscous, full half as long as the 9th ventral, and bifid fully 
half-way to its base, the tips curving apart horizontally nearly in a rectangle. 
Length % 55 —59 mill. 9 —90 mill. Expanse ^ 60—69 mill. 9 96—75 mill. 
Abd. ^ 39—41 mill. 9 41—43 mill. Append, sup. % IJ mill. Hind femur 9|-—10^ 
mill. 9 —Hi mill. Longest thorns 9 hind femur 1 mill. Front wing 
32i—34i mill. 9 36—36imill.; its width 7—71 mill. 9 H—8 mill. Hind 
wing % 31—33 mill. 9 34—35 mill.; its width % 9 —9i mill. 9 —19 mill. 
Pterost. inf. 3i—4 mill. 9 4 mill. Width of 8th ventral 9 2i mill. 
Three % , two 9 .—Ditfers from fratevnus as follows :—Is^. The ave¬ 
rage size is fully yL larger. 'Znd. The 9 vertical vesicle is laterally 
thorned. "drd. The median black stripe of the thoracic dorsum is 
wider and the adjoining yellow stripe consequently narrower, which 
