92 
NEW GENERA OF CJCAIHD.E. 
furcate at a short distance from the base of the wing, each furcation 
also becoming furcate beyond the middle of the wing ; the median 
vein is single, but emits a branch, which runs to the extremity of 
the anal vein ; a few short transverse or oblique veins connect seve¬ 
ral of these longitudinal veins together, forming but a very small 
number of cells. 
There is, however, a fine species which inhabits Nepaul (where it 
was discovered by the late Major-General Hardwicke), andother parts 
of India, which although agreeing with the typical Cicadm in general 
form and structure, has the fore wings very much reticulated, the 
postcostal and median veins being multifurcate, not only in the 
apical part, but also in the more coriaceous basal portion, the furca¬ 
tions being frequently united by short transverse veins. In the 
formation of the musical apparatus of the male and its opercula, this 
species does not differ from C. fasciata; but on account of the differ¬ 
ence which it exhibits in the structure of its wings from the true 
Cicadse, I have regarded it as a distinct sub-genus, under the 
name of— 
POLYNEURA DUCALIS, Westw. (Plate 24, fig. 2.) 
C. (P.) nigra, pronoti marginibus antico et postico (latiori) flavidis; alis anticis brunneis 
flavo-venosis, posticis fulvis; pedibus nigris fernoribus (nisi apiee) rufis. Long. corp. 
unc. 1Expans. alar. ant. unc. 4£. 
Mus. Brit. Hope. Westw. (Inhabits the East Indies.) 
A figure of this insect, with the wings expanded, has been published in Jardine’s Naturalist’s 
Library (Introduction to Entomology, pi. 18, fig. 1). 
The two insects above described agree in having the basal portion 
of the fore wings separated from the apical and more membranaceous 
part. The remaining insect, figured in plate differs from them 
both in having homogeneous fore wings, although in the slight vein- 
ing of the basal part of these wings, and the somewhat hexagonally 
areolated apical part, it agrees with Hemidictya. 
Iam indebted to J. Curtis, Esq., F.L.S., for a knowledge of this 
interesting Australian novelty, by whom it has been proposed to be 
named— 
CYSTOSOMA SAUNDERSII. (Plate 24, fig. l,and details.) 
Caput parvum, antenna} mutilaUe. Promuscis ad basin femorum intermediorum extensa. Pro-et 
meso-thoracis dorsum fere lit in Cicada maculata formatum. Epimera metathoracicamedioeria, 
medium segmenti basalis abdominis infra baud tegentia (fig. 1 e). Tympana musicalia late¬ 
rals (fig. 1 rf), ornnino detecta valde convexa, transverse striata. Abdomen maiis maxi¬ 
mum valde inflatum, organa genitalia maris parva exserta (fig. 1 a, segmenta apicalia 
abdominis infra visa; 1 b, genitalia subtus ; 1 c, eadem e latere visa). Pedes breves. 
Aim antiem homogenem, subopacse ultra medium valde subhexagonaliter areolatse. 
<j? incognita. 
C. Sauiidersii, Pallide lutea costa alarum anticarum albida. Long, corp, fere unc. 2. 
Expans. alar. unc. 3J. Mus. Curtis. (Inhabits New Holland.) 
The plant is the Lobelia hypoCrateiiformis It. Br., a native of the South Coast of New 
Holland. Lob. ramosa Benth. (figured in my second plate under the name of 
L. gracilis) is a native of Swan River, whence it was introduced in 1837. 
