AUSTRALIAN SCARITIDA. 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 emarginatum. Mandibule capite paullo breviores 
subcurvate margine interno acuto, edentato, apiceque acuto. Maxille (fig. 24), 
elongate lobo apicali acuto curvato, intus setoso, palpi maxillares breves, articulo 
ultimo preecedenti parum crassiori. Mentum (fig. 2 c), dente medio nullo arma- 
tum, palpi labiales maxillaribus longitudine zquales, articulo ultimo vix precedenti 
crassiori; antennz (fig. 2), capite vix longiores, gracillime, articulis 2do. et 3tio., 
subequalibus et sequentibus longioribus. Pronotum convexum, postice parum loba- 
tum. Elytra e pronoto pedunculo brevi subremota, convexa, apice haud truncata. 
Pedes breves, sat robusti; tibiis anticis extus dentatis, intus emarginatis et 
calcaratis, tibiis intermediis ad apicem in spinam externe productis. 
Seectss 1.—Gnathoxys granularis, Hope, MSS. (PI. 23, fig. 2 and 2a, 26 and 2c.) 
Niger subnitidus, zneo parum tinctus, pronoto subquadrato, elytrorum lateribus et apice 
granulatis, disco haud striato-punctato. Long. corp. mand. exclus. 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. 2a). The clypeus has 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 antenne are 
very slender. The pronotum has the sides nearly straight and paraliel ; 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 crenulated; the elytra are 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 striz, 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 eqnally acute. The 
middle tibia bave the apical external angles produced into an obtuse spine, above which the 
outer edge of the limb is serrulated. The middle and hind tarsi are alike, and not dilated. 
Srecies I].—Gnathorys irregularis, Hope, MSS. (Pl. 23, fig. 3.) Niger subnitidus, 
pronoto rotundato, angulis anticis haud porrectis, ely tris irregulariter punctato-striatis apice- 
que granulatis. Long. corp. lin. 8} (excl. mand.). Lat. elytr. lin. 33. 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 antenne are very short and more moniliform 
than in the preceding ; the clypeus has a rather deep, short central sulcus, terminating in a 
transverse line, behind 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 are 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, but interrupted, rows of irregular punctures, the margin 
itself being more closely punctured, and the apex granulated. The anterior tibia are not so 
strongly dentate as in the preceding, and the apical tooth of the middle tibia is not so large. 
The remaining figure in Plate 23 (fig. 4, and 4 a, and 4) repre- 
sents a gigantic Australian species which has been already figured 
and described by Schreibers, in the ‘“ Transactions of the Linneean 
Society,” vol. vi. pl. 19, figs. 15—19 (details), and pl. 21, fig. 10, 
under the name of Scarrres Scurorrert ; and by Laporte, in his 
‘““ Ktudes Entomologiques” and “ Histoire Naturelle des Insectes 
