CORNU TED CETONIIDjE. 
5 
directed my attention to this interesting novelty, for the following 
description and name :— 
MYCTERISTES (pHAEDIMUs) CUMINGII. 
M. viridis, nitore resplendent elytris pedibus et corpore subtus flavescente 
lavatis, corpore subtus paullo pubescente; capite cornu erectum exbibeme (hoc 
quoad caput longitudinem requante) ad apicem latum et paullo emarginatum, 
postice concavum, antice tuberculo uno obsitum; tliorace convexo postice augus- 
tiore quam ad mediant, marginibus lateralibus pone mediam fererectis, antice con¬ 
strictor margineposteriore in medio paullo producto,antice porrectoin cornu validum 
ad apicem bifidum super caput impendente; scutello mediocri triangulari, elytris 
longioribus quam latis, postice attenuatis, disco plano^ apice subtruncato ; pedibus 
validis, tibiis scopula pilorum subtus instructs et externehaud denticulatis. tarsis 
quam tibiae paullo brevioribus, unguibus permagnis. $ Long. corp. lin 12J. 
Differt fcemina corpore minore capite thoraceque baud cornutis, pedibus medio- 
cribus, tibiis anticis externe tridentatis, reliquis denticulo externo parvo infra 
medium instrucds, unguibus mediocribus. Elytra in fcemina quasi flavescentia 
aureo-yiridi lavata apparent, sutura et liuea longitudinali prope marginem intense 
viridibus. 
In the two species above described, the middle of the front of 
the head is produced into a single upright horn ; but in the two 
other species figured in plate 1, each side of the clypeus, or front 
of the head, is produced into a horn, giving the insects a greater 
resemblance to certain cornuted quadrupeds. 
Dicranocephalus Wctllichii (fig. 4) is an exceedingly rare insect, 
first brought to Europe from Nepaul by the late Major-General 
Hardwicke, and shortly characterised by the Rev. F. W. Hope in 
Grays Zoological Miscellany (1831, p. 24). The male is well 
figured in Gory and Percheron’s Monographie des Cetoines, tab. 
26, fi°\ 1, under the name of Goliathus Wellech. The specimen, 
'O' 
however, which they figure, has the horns of the head of small size; 
whilst in those of the fine specimen represented in my plate (pre¬ 
served in the Cabinet of the British Museum), they are very 
greatly elongated and recurved*. The parts of the mouth are 
represented in figures 4 a (one of the mandibles), 4 b (one of the 
maxilke), 4 c (instrumenta labialia), and 4d (labrum). The meso- 
sternum (fig* 4 e) is prominent but deflexed, extending lower than 
the front part of the metasternum. 
The female has the fore tibiae spined, as in the male; and the 
head, instead of being cornuted, has each of the front angles pro¬ 
duced into a tooth. 
The outline, fig. 5, represents the Nctrycius opalus of Dupont, a 
species from Madras, of which I believe no specimen exists in this 
country; figured in Guerin's Magazin de Zoologie, Insectes, pi. 128 : 
* This specimen affords another instance of the great development of the horns^in certain 
individuals of cornuted species, which are almost invariably (as in this instance) of larger size 
than the ordinary individuals. 
