12 NEW GENUS OF LOCUSTS. 
leaf. No other instance of this kind of analogy occurs to my recol- 
lection amongst the Locustide, although it is of constant occur- 
rence amongst the grasshoppers with long antenne. 
From the very compressed form of the body (another remarkable 
character) the genus may be named 
SYSTELLA, W. 
Corpus compressissimum. Caput ante oculos et inter antennas productum, 
facie valde obliqua convexa integra sc. haud carinata. Clypeus distinetus. Labrum 
antice in medio fissum. Palpi breves filiformes, labiales minores. Antenne 
secundum sexum forme varie ; in fossula tuberculi frontalis utrinque inserte, 
articulis 2bus basalibus distinctis, sequentibus 4 aut 5 arcte coalitis, deplanatis mar- 
gine interno crassiori, externo acuto, in 9 multo latioribus ; articulis reliquis 
distinctis gracilioribus (in ¢ multo longioribus), apicali attenuato. Prothorax 
compressus, dorso plano integro, lateribus angulatis. Prosternum tuberculo acuto 
armatum. Abdomen compressum alis brevius, segmento ultimo ventrali in ¢ 
maximo inflato. Pedes 4 antici breves, 2 postici saltatorii ; tibiis serie duplici 
spinarum equalium extus armatis ; tarsi 3-articulati unguibus acutis, pulvillo 
magno. Tegmina magna foliiformia, supra dorsum horizontaliter elevata, angulo 
externo antico emarginato. 
This genus appears to me, from the structure of its antennze, to 
be most nearly allied to Akicera and Porthetis, Serville, (Pam- 
phagus, Burm.,) and to Xiphicera. From these, however, as well 
as all the other genera of the family, it is separated by the peculiar 
characters above noticed. 
Species I.—Systella Rafflesii, W. Luteo-viridis, tegminibus viridibus latissimis, 
ocello magno fusco in area costali notatis. Long. corp. $ lin. 133, 9 18. Expans. 
tegmin. lin. 343. 
Antenne 15-articulate in ¢, 14 in Q ; articulis 3—7 in ¢, 3—6 in Q, coalitis dilatatis 
subprismaticis, in 9 multo latioribus, 8 reliquis in ¢ fere equalibus et filiformibus, in 9 
vero articulis 7 et 8 sensim angustatis, reliquis 6 distinctis irregularibus. Vena postcostalis 
tegminum ramos 5 simplices punctatos emittit ; vena mediana duos tantum. Apex 
marginis costalis in 9 valde, in @ parum, emarginatus. Tibie 4antice fusco-annulate. 
A single female specimen of this species is in the collection of 
the Zoological Society, and was presented by Sir Stamford Raffles, 
by whom it was most probably collected in Sumatra. I also 
detected a male in the collection formed by H. Cuming, Esgq., in 
the Philippine Islands, and destined for the British Museum. 
Species I1.—Systella Hopei, W. Fusca, tegminibus fusco luteo allidoque variis, angus- 
tioribus; emarginatura apicali marginis antici vix conspicua. Expans. tegmin. lin. 35. 
Precedenti multo tenuior, fusca, dorso prothoracis et’ capitis scabro, linea tenui fulva 
inter oculos ; antenne ( $?) 17-articulate, articulis 11 ultimis distinctis longitudine decres- 
centibus, luteis. Tegmina luteo-fusca nubila magna media (albido posticé cincta) ad 
costam angustata maculisque quadratis minoribus marginis postici fuscis, venis punctatis 
punctisque nonnullis majoribus inter venas. Abdomen et pedes postici mutilati. 
This species is unique in the collection of the Rev. F. W. Hope, F.R.S., &c., and 
is a native of China. 
The plant figured is the Indian Ceropegeia Juncea. 
