136 ON THE GOLIATHIDEOUS CETONIIDA 
deeply bidentate in the 9 (fig. 5 e); the four hind tibize are toothed below the middle. The 
abdomen is not channeled beneath in the middle in the males. The pseudonychie are long. 
I have seen specimens of this species in the collections of Messrs. Hope, Solly (from Assam), 
Parry (from Sylhet), the Entomological Society of London (received from Mr, Mc Clelland), 
and the East India House. 
Species VIII. — Heterorhina tibialis, Westw., n. sp. (Pl. 34, fig. 6 and details.) 
H. oblonga, viridis, rugosula, tibiis rufis; clypeo ¢ subsimplici, Q transverse carinato. 
Long. corp. lin. 105. Inhabits East Indies, Assam ? Mus. Soc. Mere. Ind. Or. et nostr. 
This new species is most nearly related to the preceding, but it is considerably smaller, 
narrower, and more regularly oblong. The green colour is of a much darker tint on the 
upper surface of the body, which is very much punctured, the punctures, however, being not so 
well defined as in the preceding, whence the elytra have a more rugulose appearance, except 
down each side of the suture and along two strie (bordered by deeper punctures), down the 
dise of each elytra. The under side of the body is more shining green, with a coppery tinge, 
the thoracic portion being deeply punctured. The exposed part of the metacoxe and the two 
posterior tibise are red, the tarsi black, and the femora concolorous with the body. The head 
of the male (fig. 6 a, 6 6) is nearly square along the front margin, which is slightly reflexed, 
and there is a slightly defined, curved line, running between the base of the antenne, its 
middle touching a scarcely more raised, central, small tubercle—the head of the female, on the 
other hand, has the middle of the front margin elevated into a small, upright, conieal lobe 
(not visible looking downward) ; the ridge above-mentioned is greatly elevated, and there is also 
a slightly raised tubercle behind. The maxilla have the lower lobe terminated by an obtuse 
point, scarcely stronger in the female than in the male; but the upper lobe is strongly and 
acutely bifid in both sexes (fig. 6 d). The mentum is strongly notched in the middle of the 
front margin. The fore tibie of the male are simple, but in the female they are broad and 
obtusely bidentate (fig. 6 e); the two hind tibie in the male and the middle and hind ones in 
the female are spurred below the middle. The mesosternal process is porrected, rounded, and 
slightly bent upwards at the tip (fig. 6 fand 6g). The abdomen of the male is not channeled 
beneath, and the club of the antenne is of equal length in both sexes. 
Species IX.— Heterorhina glaberrima, Westw. n. sp. (Plate 34, fig. 1, and details.) 
H. nigra nitidissima, thorace et elytris impunctatis, castaneo, glauco, vei viridi-tincta, 
clypeo integro subquadrato in utroque sexu simplice, metasterno canaliculato. Long. corp. 
lin. 113. 
Habitat in India Orientali. In Mus. Soc. Merc. Ind. Or. et D. Parry. 
This very distinct species possesses many of the characters both of Rhomborhina and Ano- 
malocera, but differs in habit materially from both, having also a much more elongated meso- 
sternal process than the former, and the clava of the antenne of the males much shorter than 
in the latter. The general form is more regularly oblong than in the majority of the species; 
the head is entire, with the front part subquadrate, being rather narrower at the base of the 
antenne in the female than in the male ; the lateral and front margins are reflexed, the latter 
being slightly curved instead of straight; the disc of the head is nearly flat and punctured. 
The club of the antenne in the male is evidently longer than in the female; the lower lobe 
of the maxilla of the male (fig. 1 @) is not so acutely hooked at the tip as in the female 
(fig. 1 6) ; the mentum is deeply notched in front ; the fore tibiz in the males are simple, but 
strongly bidentate in the females (fig. 1 e) ; the mesosternal process is elongated, not acutely 
pointed at the tip, which is bent upwards (fig. le 1d) 5 the elytra are somewhat acuminated 
at the tips. The metasternum in the males is deeply channeled longitudinally, and there is 
an impression in the middle of the basal joint of the abdomen; the metasternal impression is 
less strong in the female than in the male, and the basal joint of the abdomen is not 
impressed. The four hind tibiz in the males are simple, but slightly spurred beyond the 
middle in the female. The pronotum and elytra are exceedingly glossy and impunctate, 
except the front of the former and the extremity of the latter. The colour is dark, but 
variable from a rich chestnut colour to green or bluish purple, having in some shades a strong 
tinge of rich red brown, which it is impossible correctly to represent by colours. The podex is 
rugose, and clothed with fulvous hairs. The underside of the body and legs also varies in 
colour according to the upper side. 
This species serves well to show the gradual approximation of forms in a complete series of 
the species of a natural group; it is only because we find other species in the present genus 
with an entire quadrate clypeus, such as H. leta, Hopei, &c., that I have retained this 
