OF THE EASTERN WORLD. 141 
in the collections of the British Museum and Mr. Waterhouse, represented in fig. 6 with its 
details. The horns of the front of the head in this insect are even longer than in H. bicornis, 
the extremities being compressed ; the general colouring agrees with H. ornata 9, as does 
also the size and shape of the yellow patches on the elytra; the femora, as in that species, are 
blood-red at the base, with the tips black, and the prothorax beneath is blood-red. It is 
represented of the natural size. 
Specs XXI.—Heterorhina biguttata, Westw. (Plate 36, fig. 5, and details). H. nigra, 
nitida, pronoto utrinque plaga sanguinea, elytrisque maculis duabus minoribus fere 
rotundatis mediis fulvis. 9 Long. Corp. lin. 8. 
Habitat in Insulis Philippinensium. D. Cuming. In Mus. Britann. 
The only individual I have seen of this species is a female, in the collection of the British 
Museum, brought from the Philippine Islands by Mr. Cuming. It closely agrees in its general 
character with the female of H. ornata, but has the elytra more attenuated behind, and the 
conical front of the head is rounded off, and but slightly bifid. The horn on the crown of the 
head is broader in front; the sanguineous patches on the pronotum are wider apart, and the 
yellow spots on the elytra are of a dark fulvous-yellow, and occupy only a small portion of 
the middle of each side of the elytra, each having its margin towards the suture almost 
regularly rounded. The femora and terminal segment of the abdomen are coloured as in the 
preceding species, but the prosternum is not red at the sides. 
Seecies XXI1.—Heterorhina decora. 
Dicheros decorus, Gory and Perchéron Monogr. Cét. Plate 58, fig. 4. 
Inhabits Java. The head is described by Messieurs Gory and Perchéron as “ courte, con- 
cave, rebordée, bidentée antérieurement, carénée sur le vertex.’’ I regret that owing to the 
indisposition of M. Gory, I was unable to examine this species in his cabinet, during my recent 
visit to Paris. I am unable, therefore, to speak with precision as to its specific distinction from 
the following species. 
Species. —XXI1.—Heterorhina Petelit (Plate 36, fig. 4, and details). 
Gnathocera Petelii, Buquet in Ann. Soc. Ent. France, 1836, p. 206. 
The head of the female of this species (now first delineated from the collection of M. Buquet) 
is similar in its structure to that of the female of H. bicornis, having a short flattened horn 
between the eyes, extending over the deep impression of the clypeus, which is slightly elevated 
and but slightly emarginate in front. This sex only is described by M. Buquet, nor does he appear 
to be aware that it is the female, and that from analogy the male must be similarin the form of 
the head to C, bicornis. It is broader in its outline than the other species I have examined. 
M. Buquet describes the dessows du corps as red. The underside of the body is, however, 
black, the three apical segments of the abdomen alone being blood-red, which is also the 
colour of the deflexed sides of the pronotum, scutellum, and pygidium. The mesosternal 
process is represented in figures 4 a and 4 0; the tip being bent upwards. 
The plants represented in these plates are as follows :— 
Plate 33. Cypripedium purpuratum, Lindl. Bot. Reg. pl. 1991. A native of the Malayan 
Archipelago. 
Plate 34. Pontederia vaginalis, Roxburgh’s Plants of Coromandel, 2, pl. 110. 
Plate 35. Cypripedium barbatum, Lindl. Bot. Reg. 1842, pl. 17; brought from Mount 
Tophir, in the Straits of Malacca, by Mr. Cuming; and 
Plate 36. Dolichos lignosus, Linn. An Indian legume, the seed-vessels of which are a 
common food throughout India, eaten as our French or kidney-beans are, to which, however, 
according to Rumphius, they are far inferior. 
Note.—The Gnathocera dorsalis of Gory and Perchéron is the only species of the group 
treated upon in the previous pages hitherto described as a native of New Holland. The tribe 
is however confined to the tropical portions of the Old World; for the insect in question 
belongs to Mr. Kirby’s genus Macroma, and instead of being the dorsalis of Kirby, as quoted 
by the French monographers, it is his Macroma scutellata; the M. concolor of the Kirby 
Cabinet (now in the possession of the Entomological Society) being a dark variety of the same 
species. The true dorsalis of Kirby is a large species of Schizorhina. 
