COLEOPTERA. 55 
a reversed triangle ; anterior tibiz wider, dilated in the manner of a 
reversed triangle, and frequently dentated, or furnished with small 
spines on one of its sides*. In 
Diareris, Geoff., Fab., 
Or Diaperis properly so called, the maxillary palpi terminate in an 
almost cylindrical joint, hardly thicker than the penultimate; and 
the anterior tibice, hardly or not at all wider than the following ones, 
are narrow, almost linear, and slightly dilated at the extremity. 
Among those species where the body is ovoid and convex, the 
thorax is lobate posteriorly, and the antennz are thick and 
almost entirely perfoliate, comes the D. boleti; Chrysomela 
boleti, L., Oliv., Col., III, 55, 1, whose body is about three lines 
long, of a glossy black, with three fulvous-yellow, transverse, 
and dentated bands on the elytra—lIn the fungi of trees. 
Another more elongated species, placed among the Ips by 
Fabricius—hemorrhoidalis—forms the genus Neomida of Zieg- 
ler. The head of the male is armed with two horns +. 
Some others, but in which the five last joints are alone perfoliate 
and form a little club, also constitute a separate genus, that of Pen- 
taphyllus }. 
Other Insects of this tribe, whose antenne gradually enlarge and 
are almost entirely perfoliate, are distinguished from Diaperis and 
* Some by their elongated form approach Tenebrio. The intermediate joints of 
the antenne are almost obconical, and the four last compose a perfoliate club. The 
head of the males is horned. M. Dalmar has figured a species cf this division— 
Phaleria furcifera, Analect. Entom., IV. M. Fischer—Entomog. Imp. Russ., IT, 
xxii, 3, has figured another. The Trogositz taurus, quadricornis, vacca of Fabricius 
belong to this divison. 
Others have the body oval and depressed; and the antenne very perfoliate— 
such are the Tenebriones culinaris, retusus, chrysomelinus, impressus, nitidulus of that 
author. 
The species of these two divisions form the genus Uloma, Meg. and Dej. Those, 
in which the body is shorter and more rounded, in the form of a short ellipsis, or 
even hemispherical, and in which the six or seven last joints of the antenne are 
almost globular, constitute the Phaleria, De}. The Tenebrio cadaverinus, Fab., is of 
this number. 
A species—bicolor—from the Cape of Good Hope, belonging to this division, is 
distinguished from the preceding ones by the maxillary palpi, which are terminated 
by a proportionally larger securiform joint, and by its antenne, of which the four 
last joints are alone globular. 
Another — peltoides—approaches Peltis and Cossyphus, Fab., in its flattened 
form. Its antenne are hardly perfoliate; most of the joints, and eyen the last, 
being in the form of a reversed cone. 
+ The Trogosite cornuta, and mawillosa of Fabricius, on account of the difference 
in the mandibles presented in the two sexes, might be formed into a separate sub- 
genus. The T. ferruginea, Fab., also appears to constitute another by its antenne, 
which abruptly terminate in a perfoliate club of three joints, the preceding ones 
being very small and granose. 
t See Catalogue, &c., Dej., and Dahl., and for the other species, Fabricius, 
Olivier, and Gyllenhal. 
