AFRICAN CETONIIDJE. 
71 
reversed triangle; and the female having the head broad and nearly 
quadrate, the fore tibiae externally 3-dentate, the four posterior with 
one tooth in the middle, and both lobes of the maxilla armed with 
a strong tooth *. 
The three other insects figured in this plate will be deemed 
highly interesting additions to this family, not only because 
they are not included in the work of Gory and Percheron, or 
Mr. MacLeay's Memoir on the African Cetoniidae, but from their 
structural characters. The two upper ones were regarded by Dr. Bur- 
meister, whilst in this country, as congenerous with Coelorrhina 
4-maculata. They, however, certainly belong to a different group, 
which appears to me to be intermediate between Coryplie of Mac- 
Leay (Gnathocera, G. and P., but not of Kirby), and the more aber¬ 
rant Schizorhinae “j*, and for which may be proposed the sub-generic 
name of 
TMESORRHINA, W. 
Caput maris baud cornutum, clypeo in utroque sexu emarginato. Maxilla; 
lobo interno apice obtuso vel in dentem brevissimum et obtusuro producto; lobo 
apicali brevi obtuso supra dense ciliato. Mentum apice valdeincisum. Prothorax 
subtrigonus postice latissimus margine postico in medio emarginato. Elytra basi 
latiora, interdum ad apicem sutura? spinosa. ]\Iesosternum breve, porrectum 
latum rotundatum. Pedes antici maris longitudine variant, tibiis externe (nisi 
in apice) haud vel vix dentatis. Tibia? intermedia? maris in medio inermes, postica? 
vero in medio dente minuto instructs. Pedes foemince breviores latiores, tibiis anticis 
extus 3-dentatis, intermediis in medio vix dentatis; posticis in medio 1-dentatis, 
ungues appendiculo brevi bisetoso instructi. Color metallicus nitidissimus. 
In respect to the unarmed head of the males, these insects may 
be considered as the African representatives of Coryphe beta of 
Java, and C. nigritarsis of India ; the maxillae, anterior tibia?, and 
clypeus are, however, not similar; the latter character would 
indeed induce us to refer these insects to Schizorhina, but we find 
an emarginate clypeus in the females of Coryphe umbonata and 
C. flavomaculata, whilst the metallic colouring is more especially 
the character of Coryphe. 
Species I.— Tmesorrhina amabilis, W r - (PL 19, fig. 2.) Smaragdina, nitida, nigro-punctulata, 
antennis nigro-piceis, femoribus tibiisque roseo-opalinis, tarsis nigris, prothoracis lateribus 
(nisi versus angulos posticos) marginatis — g . 
Syn. —Gnathocera amabilis , Bainbridge (in Proc. Eat. Soc. p. 5, March 2, 1840). 
Long, corporis, lin. 10. Habitat Sierram Leonam, D. Straclian. In Musaeo D. Hope. 
* I am indebted to the Rev. F. W. Hope for permission to dissect a great number of bis 
rare and unique Cetoniidae, including a female of Coil. 4-maculata. 
f Such as S. cyanca, Oliv., which is a native of Sierra Leone, although Mr. MacLcay says 
that no Schizorhina; occur in Africa (Get. So. Afr. p. 28). It has the apical lobe of the 
maxillae terminating in an acute spine, the inner lobe unarmed, the male fore tibiae narrow and 
terminated externally by two spines ; and the female fore tibiae broad and tridentatc. Mr. Mac- 
Leay gives this as the type of his section of Schizorhina which he named Insulares (1 presume 
after Sch. insularis), which is, however, very unlike Sch. cyanea, in many respects. 
