ORIENTAL ENTOMOLOGY.
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of August on cucumber leaves. He usually took tliem separately, and never saw tliem swarm togetlier
like the gnats do in England.*
FIGURE 4. ACHIAS MACULIPENNIS. WESTW.
Achias fulyus, vcrtice transverse fuscano, thorace maris vittis tribus longitadiiiaiibus, sciiteUo, et metatliorace
fuscis ; foeminoe fulro ; abdomiiie (maris) nigro basi pariim Mvo, alis fuscis, maculis duabns fiih-is ad basin costoe,
ahis diiabus ad medium costoe, tribus ad margiuem posticum pimctoque pai-vo ante apicem byalinis ; pedibus fuscesoentibus
articulis tai-sisque luteis.
Acliias fulvous, witli a ti-ansrerse brown streal^ on the vertex ; the thorax of the male Nvith tliree longitudinal
sti-ipes, the scutellum and metathorax brora ; thorax of the female fulvous, abdomen of the male black, with the
base slightly fulvous ; wings brown, with two fulvous spots at the base of the costa, two others neai- the middle of
the costa, three on the posterior margin, and a small round dot before the tip of tlie wing, all hyaline ; legs brown,
with the articulations and tarsi luteous. ° '
Expansion of the ™g s | inch.
Inhabits Java. In the Mnseiun of the East India Company in Leadenhall street, London.
OBSERVATIONS.—Both sexes of this fine species were collected in Java, by Dr. Horsfield, to whose
kindness I am indebted for an opportimity of figuring it. The female has the head of the usual size,
being small, round, and not so ^ide as the thorax, which is not streaked with broTO, and the abdomen
terminates in a point.
The last joint of the antennEe of the male is long, narrow, and rounded at the tip, and the seta is
fringed with long setulie ; the antennaj arise close below a curved sHghtly-raised carina, which is close
below a deeply impressed line which runs to the tips of the ocular peduncles in front. The mouth is
luteous, in the middle of a broad dark transverse band. The wings are very broad and the veins
ciu'ved, which is not the case with A. ocnlatus. The scutellimi is armed with two long erect setiE.
The genus has hitherto consisted of only a single species from Java, described by Fabricius, from a unique
specimen in the collection of Bosc, still preserved at the Jardin des Plantes, of which a good figure
has been pubhshed by M. Guerin Menèville, in his Magazin d'Entomologie, pl. 7. Two other
remarkable insects, Zygothrica dispar and Plagiocephala lobularis, have been described and figured
by Wiedemann, whose figtu-es are copied into Griffiths' Translation of the Règne Animal.
FIGURE S. COLAX ? VARIEGATUS. WESTW.
Colax « fuscus capite subtus, thorace lateribus postice et subtus albo-hirtis ; disco fusco strigis paUidis ; abdomme
dilatato fusco-piceo serieeo, strigis transversis obscni-ioribus ; pedibus brevissimis fusco albidis ; antennis luteis, alis
fuscis nigro maculatis alboçiue variegatis ; abdomine filamentis duobus elongatis subtus terminato.
Colax ? brown, with the underside of the head, the sides, under, and hind parts of the thorax clothed with white
hairs, the disc of the latter dark-brown, with pale streaks ; the abdomen dilated, pitchy-brown, silky, with obscure
transverse fascise ; legs very short, dii-ty white ; antennie inserted in a transverse impression in the middle of the
face, short, dilated, and obliquely truncate at the tip, luteous ; the wings brown, dotted with black, and variegated
witli white ; the abdomen terminated by two long slender deflexed filaments ; the mouth appears only as a minute
filament ; the tarsi are terminated by three pulvUH.
Expansion of the wings 12^ lines.
Inhabits China. In the British Museum.
OBSERVATIONS.—Notwithstanding the very rudimental structure of the mouth in this insect, as
well as in the genera Colax, Wiedemann, and Trichopsidea, Westw., I am inclined to refer them to
the position proposed by M. Macqnart (Dipt. Exot. ii. p. 34), namely, in connexion with the
Nemestrinîe, in which the mouth is developed to its highest extent. Their relation to the OEstridoe
appeal's to me more questionable.
The Orchidaceous plant represented is the Bromheadia palustris, from Singapore and Sumatra.
* Colonel Sykes observes of D. Sykesii, " This insect affects chasms or ravines in the lofty woods which encircle the liill fort of
Hnrreechunderghur in the western ghauts of the Deccan, in various places. Where the sunbeams occasionally pierce the woods and
fall upon isolated or salient rocks m the above localities, they are seen in myi-iads either poising themselves in the rays, or reposing
in the spots on which the rays fall."
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