PLATE XXV.
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( O R D E R — O R T I I O P T B R A . SECTION—SALTATORIA. FAMILY—GRYLLIDÍB, LEACII. LOOUSTABL-E LATH.)
F I G U R E 1.
A C A N T H O D I S IMPERIALIS WNITE, (ANN. NAT. HIST. Vol. XYÍÜ., pi. 1, fig. 1.)
Acanthodis nigricans, pronoto vii'idi-flavescente ; tegminibus costa brunnea uigro alboquo maculata, parte postica
nigricauti m.iculis tribus maguis (margine interno connexis) viridibus; alis nigris venis transversis Yiridi-albis
pedibus anticis nigricantibuSj postieis viridibus.
Acanthodis ivith the body black, the pronotum yellowish gi-een, the costa of the tegmina rich brimneous with black
and white spots, the hmd part blackish with tlu'ee large beautiful green spots which are united together on the inner
margin ; the wings black with the transverse veins of greenish white, the fore legs blackish, the liind ones greenish.
Expansion of the wmgs 41 inches. Length, including the ovipositor, 2 | inches. Length of the antennas 6 inches.
Inhabits Assam and Sylhet, Communicated by Col. Jenkms, E. Doubleday, and W. W. Saunders, Esqrs.
DESCRIPTION.—Head yellow in front, tlie rest brown; body shaded below-with light brown ; pronotum
nearly smooth, yellowish green with two transverse impressions; tegmina somewhat bulging at
the base, brown with black marks, and with from three to sis small yellowish-green sub-triangular
spots on the costa; the greater part of the inner margin of a most beautiful green, with three large
patches generally reaching the large middle vein; the outside edges of the green parts sometimes
shaded to white; wings glossy black, marked ^ t h many short pale greenish-white transverse veins,
mth several faint whitish spots on the costa; the fore legs, middle tibiai and aU the tarsi blackishbrown,
remainder of the legs green or yeUowish-brown; hind legs not spinose and rather short;
ovipositor long, sabre-shaped, chestnut-brown, darker at the tip. All the sternal plates simple,
transverse, and buff-coloured. Anal plate of tlie male bufif-colom'ed, large, somewhat conical,
terminated by two points. The crepitaculum of the fore wings of the male, of moderate size, black,
reticulated mth fulvous veins.
This is one of the most beautiful species of the family hitherto discovered, the fine contrast of
its colours giving it a peculiarly rich appearance.
F I G U R E 2.
A C A N T H O D I S DONOVANI. DO-N'OV. (NAT. REPOS. 2, pi. 69.)
Acanthodis fusc.i pronoto fulvo margine postico fusco, tuborcuhs duobus mediis, fasciaque media abdominis palhda,
tegmnubus rufescentibus macuUs numerosis nigris liturisque variis irregularibus plus mhmsve confluentibus flavo
viridibus medium tegminum occupantibus, alis pallidis costa venisque ti'ansversis p.allide fuscescentibus.
Acanthodis brown, witli the pronotum fulvous, hind margin brown .and with two tubercles on the disc, the middle
of the abdomen with a pale fasci.-!, the tcgmin.i reddish, with numerous black spots and various irregular patches of
grranisli-yellow, more or less confluent, along the middle of the togmin.-i, wings pale, with .the costa and ti-ansverse
veins pale brown.
Expansion of the wings of the male inches ; of the female 3} inches.
Inhabits the East Indies. In Mus. Hope.
OiiSEuvATioNs.—Donovan having given a representation (somewhat indeed exaggerated) of the female,
the opposite sex of this very rare species is here deUneated. In this sex the wings are considerablv
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