118 ASLATIC CETONIID. 
the simple tibize of the males of these insects at once distinguish 
them from the last-mentioned group. The antennze do not materially 
differ in the sexes; the inner lobe of the maxille of the female of 
Rh. opalina (pl. 30, fig. 5 a), is armed with a strong horny hook, 
which is much less strong in the males (Rh. hyacinthina ¢, e. g.). 
The mentum is deeply cleft in front, its hind part being rather 
broader than the front (pl. 30, fig. 56). The club of the antennze 
does not vary in size in the opposite sexes, and the mesosternal pro- 
cess is generally porrected, broad, and blunt, but it differs in shape 
in the different species. The fore tibize of the females are bidentate ; 
the hind tibize in the same individuals are much more strongly 
spurred beyond the middle than in the males. The following are 
the species of this genus :— 
Species I.— Rhomborhina resplendens. Rh. ‘‘aureo-viridis nitidissima, versicolor, elytris 
subtilissime seriato-punctatis ; basi, limbo scutellari, sutura tarsisque nigro-violaceis.’’ 
Schis 
echon. 
Syn.—Cetonia resplendens, Swartz, in Sch. Syn. Ins. vol, i. part 3, app. p. 51, (1817.) 
Goliathus Heros, Latreille, Gory, and Perchéron, Mon. Cet. pl. 26, fig. 3. 
Obs.—The abdomen of the male is not longitudinally impressed beneath, and the fore tibize 
have a vestige of a tooth below the apex on the outside. 
Specizs I1.—Rhomborhina Mellii, Gory and Perchéron, Mon. Cet. pl. 26, fig. 4. 
Srecies LI1I.— Rhomborhina distincta, Hope, in Trans. Ent. Soc. Lond. vol. iii., p. 63. 
Obs. —This species was described from a specimen sent from Assam, which appears to me to 
be specifically identical with Rh. Mellii. 
Species 1V.—Rhomborhina opalina. 
Syn.—Cetonia opalina, Hope, in Syn. Nepal. Col. p. 24, Gory and Perchéron, Mon, Cet. 
pl. 26, fig. 5. (Goliathus op.) 
Obs.—The male is narrower than the female. The scutellum is sometimes only dark- 
coloured at the apex; the hairs of the four posterior tibiz and abdomen are fulvous, and the 
mesosternum is porrected and broad in front, almost as in Rh. hyacinthina (pl. 30, fig. 1 a). 
Captain Parry has received it both from Nepaul and the Himalayas. 
Species V.—Rhomborhina apicalis, Westw. (Plate 30, fig. 2.) Laete cupreo-fulva, elytris 
apice scabris et nigris, tibiis tarsisque nigris et nigro-setosis, thorace subtus nigro, abdomine- 
que cum femoribus eneo. Long. corp. lin, 15. 
Habitat in Nepalia, D. Hardwicke ; et Assam ? 
In Mus. Soc. Linn, Lond. et Soc. Merc. Ind. Orient. 
Obs.—The ciypeus is alike in both sexes—large and rounded in front. The sides of the 
pronotum and the disc of the elytra are finely punctured, some of the punctures on the latter 
forming irregular lines. The apex and sides of the abdominal segments are clothed with short 
black hairs. The fore tibia of the females are not so strongly spurred as in some of the species. 
There is an impression on each elytra beyond the middle; the mesosternum is very broad and 
rounded in front (fig. 2a@,26). The male has the abdomen broadly but very shallowly 
impressed. 
Srecies VI.—Rhomborhina Japonica. (Plate 30, fig. 4.) Hope, in Trans. Ent. Soc. 
Lond., vol. iii. p. 64. In Mus. D. Hope et Dupont. 
Obs.—The short broad form of this species together with its large-sized head distinguishes it 
from the rest of the genus. The hairs on the hind tibize and abdomen are short and fulvous. 
The scutellum is concolorous with the pronotum and elytra, the mesosternal process is of 
moderate size, nearly as long as broad, rounded, and slightly dilated in front (pl. 30, fig. 4@ 
and 4 4, the former figure, representing the apical portion, scarcely elongate enough). The fore 
tibize of the females are very broad and strongly bidentate. 
