OF THE EASTERN WORLD. 137 
species in the genus now under description. In its peculiar habit it most approaches Rhom- 
borhina apicalis, but in that species the clava of the antenne is of precisely equal length in 
both sexes, whereas in Rh. cyanipes it is rather Jarger in the male than in the female. 
Species X.—Heterorhina leta (Plate 34, fig. 2 a—). 
Cetonia leta, Fabr. Syst. El. 2, p. 150. 
Cetonia pyropus, Herbst. Col. 3, p. 258, pl. 32, f.6. Voet. Col. ed. Panz. 1, pl. 4, f. 27. 
This beautiful species has the clypeus entire in both sexes, and slightly reflexed (fig. 2 a). 
The mandibles have the horny part acute, and about one third longer than the square portion 
(fig. 2 6). The maxille have both lobes curved and acute (fig. 2.¢); they are alike in both 
sexes. ‘The mentum has a deep but rather narrow notch in the middle of the front margin 
(fig. 2d). The club of the antenne of the males is not longer than that of the females; the 
abdomen of the males is not channeled beneath. The mesosternal process (fig. 2 e 2 f) is 
elongate-conic, and rather obtuse at the tip, which is bent upwards toward the body 3 the fore 
tibia in the males (fig. 2 g) are entire, but broad and bidentate in the females (fig. 27); the four 
hind tibie are furnished below the middle with very slight rudiments of a spur; the two posterior 
in the males are curved towards the base (fig. 2h). The female has the elytra broader 
behind than the male. The species is not only a native of Java, but Mr. Parry has received 
it from Sylhet, and there is a female specimen in the Museum of the Jardin des Plantes 
labelled Gnathocera australis, received from M. Gory as a native of New Holland, which I 
cannot distinguish specifically from the true types of the species. 
Species XI.—Heterorhina Bengalensis (Plate 35, fig. 1, and details). 
Cetonia bengalensis, Hope, Syn. Nep. Col., in Zool. Misc. p. 24. 
Gnathocera melanaria, Gory and Perchéron, Mon, Cét. pl. 22, fig. 5 (variety). 
Gnathocera pyroscelis, Hope MSS. (variety). 
All the specimens of this species which I have seen are females, and differ in no structural 
respect from each other, the varieties consisting in the more or less pitchy red or black elytra, 
and the colour of the tibie, some having them all black, others with the four, and some with 
only the two hind ones fulyous red. The front of the clypeus is conical and notched in the 
middle, with a strong dorsal carina terminating in an obtuse point (fig. Ja and 16) ; the 
mandibles have the horny blade rather broad in the middle, and at least one third longer than 
the square portion (fig. }¢); the maxilla have the lower lobe curved and strongly hooked, and 
the upper lobe is strongly curved and acutely bifid (fig. 1d) ; the mentum has the front margin 
nearly straight, a very minute notch only being visible in the middle of the fore margin (fig. 
le); the mesosternal process is very short and obtuse (fig. 1f and 1g); and the anterior tibiae 
broad and strongly bidentate; and the four hind ones spurred below the middle. 
Species XII.—Heterorhina jucunda. 
Gnathocera jucunda, Germar in Allg. Lit. Zeit. Aug. 1837 (nec. Cor. jucunda, Hope 
in Trans. Ent. Soc. 3, p. 64). 
Gnathocera smaragdina, Gory and Perchéron, Mon. Cét., pl. 20, fig. 1, nec smaragdina, 
Voet and Herbst, which = H. africana. 
Messrs. Gory and Perchéron give China as the locality of this species. It has, however, 
much more the habit of an African insect, judging from the male specimen in Mr. Hope’s 
collection, The head is nearly quadrate in front, the anterior margin, of the clypeus being 
only slightly produced into an elevated lobe ; the back of the head is strongly carinated, the 
carina terminating in an elevated semicircular lobe ; the maxillee have the inner lobe acute, 
curved, and horny, and the upper lobe obtusely and obliquely truncate, and not so long as the 
lower tooth ; the mentum has a small, but distinct, notch in the middle of the front margin ; 
the mesosternal process is elongate-conical, and bent upwards at the tip; the abdomen is not 
channeled beneath ; the anterior tibize are narrow and nearly simple, the apex on the outside 
being slightly oblique-truncate, so as to give the appearance of an indication of bidentation ; 
the four posterior tibia are simple; the tarsi are rather elongate and narrow, with the pseud- 
onychize obsolete. I should conceive from these characters that this specimen is a male, and 
that it, as well as H. chloris, Hope (Gory and Perch., pl. 20, fig. 5), to which it is closely 
related, are African insects. 
