AUSTRALIAN S0AR1TIMS. 
89 
GNATHOXYS. 
Caput pronoto multo angustius, pone oculos sensim paullo latius, ante oculos 
parum attenuatum ; labrum (fig. 2 a) porrectum angustum, angulis anticis rotun- 
datis, in medio plus minusve emarginatuin. Manclibulse capite paullo breviores 
subcurvatae margine interno acuto, edentato, apiccque acuto. Maxillre (fig. 2 l>), 
elongates lobo apicali acuto curvato, intus setoso, palpi maxillares breves, articulo 
ultimo precedent! parum crassiori. Menturn (fig. 2 c) } dente medio nullo arma- 
tum, palpi labiales maxillaribus longitudine Eequales, articulo ultimo vix precedent! 
crassiori; antennae (fig. 2), capite vix longiores, gracillimm, articulis 2do. et 3tio., 
suba?qualibus et sequentibus longioribus. Pronotum convexum, postice parum loba- 
tum. Elytra e pronoto pedunculo brevi subremota, convexa, apice baud truncata. 
Pedes breves, sat robusti; tibiis anticis extus dentatis, intus emarginatis et 
calcaratis, tibiis interinediis ad apicem in spinam externe productis. 
Species I— Gnathoxys grauularis, Hope, AISS. (PI. 23, fig. 2 and 2 a, 2 b and 2 c.) 
Niger subnitidus, reneo parum tinctus, pronoto subquadrato, elytrorum lateribus et apice 
granulatis, disco baud striato.punctato. Long. corp. mand. cxclus. lin, 13. Lat. elytr. 
lin. 5. Mus. Hope. (Inhabits Port Essington.) 
The general colour is black, tinged, especially at the sides of the elytra, with brassy. The 
labrum is formed of two lobes rounded in front (fig. 2 a). The clypcus lias an arched impres¬ 
sion in front, succeeded by a transverse line, from which run two straight longitudinal 
impressions, which do not extend to the middle of the crown of the head. The autennse are 
very slender. The pronotum has the sides nearly straight and parallel; the anterior angles 
somewhat advanced in front and narrowed off, as well as the hind angles, which are rounded 
off; the hind margin forms a lobe, and is separated by a transverse impression; it has a slight 
impressed middle line, its sides are margined and crcmilaied ; the elytra arc rather dilated 
behind, with the base, sides, and apex thickly covered with minute raised granules, which also 
reach a short distance along the suture, the disc not being marked with strife, or punctures. 
The fore legs are externally 3-dentate, the 3rd tooth being near the base, and the middle one 
nearly in the centre of the limb; the two basal joints of the fore tarsi have the outer angles 
produced into an acute point, the two following joints have the fore angles equally acute. Tho 
middle tibia? have the apical external angles produced into an obtuse spine, above which the 
outer edge of the limb is serrulated. The middle and bind tarsi arc alike, and not dilated. 
Species II.— Gnalhoon/s irregularis , Hope, MSS. (PI. 23, fig. 3.) Niger subnitidus, 
pronoto rotuiidato, angulis anticis baud porrectis, clytris irregulariter punctato-striatisapice- 
que granulatis. Long. corp. lin. 8^ (excl. mand.), Lat. elytr. lin. 3J. Mus. Hope. 
(Inhabits Port Essington.) 
This species is black with a slight cyaneous tint. The labrum is but slightly emarginate in 
the centre in front, with the sides rounded ; the antennae are very short and more moniliform 
than in the preceding ; the clypeus lias a rather deep, short central sulcus, terminating in a 
transverse line, behiud which are two longitudinal impressions not reaching to the middle of 
the crown of the head. There is also a transverse slightly-impressed line running across the head 
behind the eyes. The pronotum has the sides rounded, the anterior angles not porrected, and 
the hind margin not so much produced as in the preceding; there is a slight impressed line 
down the centre of the pronotum. The elytra arc short, with the sides parallel, the humeral 
angles rounded off; on each side of the suture is a row of impressed punctures placed irregu¬ 
larly ; then follow three double, hut interrupted, rows of irregular punctures, the margin 
itself being more closely punctured, and the apex granulated. The anterior tibice are not so 
strongly dentate as in the preceding, and the apical tooth of the middle tibiae is not so large. 
The remaining figure in Plate 23 (fig. 4, and 4 and 4 b ) repre¬ 
sents a gigantic Australian species which has been already figured 
and described by Schreibers, in the 16 Transactions of the Linnsean 
Society,” vol. vi. pi. 19, figs. 15 — 19 (details), and pi. 21, fig. 10, 
under the name of Scarites Schroeteri ; and by Laporte, in his 
“ Etudes Entomologiques” and u lIistoire Naturelle des Insectes 
