126 MADAGASCAR CETONIID. 
and the African group* typified by Cet. bimaculata, De Geer. (flavo- 
maculata, Auct.), and especially to the genus Lophorrhina, Burm. 
MSS. (Cetonia 5-lineata, F. and pentachordia, Klug), also from 
Africa, (but unknown to Mae Leay,) which, like the present genus 
possesses tridentate anterior tibiz in both sexes. 
Genus PL/ESIORRHINA, Burm., MSS. 
Plesiorrhina reflexa, (Plate 32, fig. 1.) 
Syn.—Cetonia (Goliath) refiera, Gory and Perchéron (Descr. de quelq. nouv. Esp. de 
Cétoines de Madagascar, in Silb. Rev. Ent. 1835, No. 15). 
The large size of the head of the male of this species, with its 
dorsal and lateral horns, render it a very conspicuous insect. It is 
but moderately shining, and but very slightly punctured, being of 
a black colour with a greenish tinge, except the pronotum and 
elytra, which are slightly tinged with blue; the dorsal horn of the 
head has a eastaneous central line down the centre, the sides of the 
pronotum are castaneous as well as the two spots on the posterior 
margin; the base of the metacoxze and the exposed part of the 
mesosternum are luteo-castaneous. The general colour of the under- 
surface of the body is a dark apple green. The femora and 
reflexed undersides of the pronotum luteo-fulvous, with a slightly 
greenish tinge. Fig. 1 a represents the head of male, seen from the 
side, and 14 from beneath ; 1c, the maxilla of the male, the lower 
lobe destitute of any tooth; Id, the mentum, deeply channeled 
parallel to the tip (as in the typical Goliathi), concealing the base 
of the labial palpi; le, the mesosternum seen laterally, and 1f 
seen from beneath; 14, the head of the female, and 1 h, the fore 
tibize of the same sex. The female has the four posterior tibiz also 
more strongly spurred, beyond the middle, than the males, and the 
mesosternum broader and somewhat more triangular. 
The female of Goliath ochreata, G. and P., has the sides of the 
head straight, the front part forming a short triangle with the 
point in front ; the inner lobe of the maxillz is much broader than 
in Pl. reflexa ¢, but without any tooth; the mentum is very 
similar in shape and structure to that of Tmesorrhina concolor 
(pl. 19, fig. 3), being, however rather broader, and the mesoster- 
num is considerably more porrected than in Pl. reflexa. It is in the 
collection of the Rev. F. W. Hope. 
* ANISORRHINA, Westw. 
Tibiz antice ¢ inermes, 9 extus 3-dentate. Tibix 4 postice ¢ simplices, 2 latiores pone 
medium calearate. Maxille lobo interno spina acuta terminato, lobo externo nonnullis 
bifido. Mesosternum porrectum conicum. Tarsi antici ¢crassiores quam in 9. Clypeus 
forme variabilis sc. in A. bimaculata De G. caput maris antice conico-elevatum et occipite 
spina plana obtusa armato; foeming vero simplex inerme et antice emarginatum : in 
A. umbonata K1. caput utriusque sexus inerme et antice fere rectum est. 
