COLEOPTERA. 56 



a reversed triangle ; anterior tibiae wider, dilated in the manner of a 

 reversed triangle, and frequently dentated, or furnished with small 

 spines on one of its sides *. In 



DiAPERis, Geoff., Fab,, 



Or Diapcris properly so called, the maxillary palpi terminate in an 

 almost cylindrical joint, hardly thicker than the penultimate; and 

 the anterior tibiae, 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 lobatc posteriorly, and the antennae are thick and 

 almost entirely i)erfoliate, comes the D. boleti ; Chrysomela 

 boleli, L., Oliv., Col., Ill, 55, 1, whose body is about three lines 

 long, of a glossy black, with three fulvous-yellow, transverse, 

 and dentated bands on the elytra. — In the fungi of trees. 



Another more elongated species, placed among the Ips by 



Fabricius — Jicemorrhoidalis — forms the genus Neomida of Zieg- 



ler. The head of the male is armed with two horns f. 



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 J. 



Other Insects of this tribe, whose antennae gradually enlarge and 

 are almost entirely perfoliate, are distinguished from Diaperis and 



* Some by tlieir elongated form approach Teuebrio. The intermediate joints of 

 the antennae are almost obconical, and the four last compose a perfoliate club. The 

 he.ad of the males is horned. M. Dalmar has figured a species of this division — 

 Phuleria furcifera, Analect. Entom., IV. M. Fischer — Entomog. Imp. Russ., II, 

 xxii, 3, has figured another. The Trogositte taurus, quadricornis, vacca of Fabricius 

 belong to this divisou. 



Others liave the body oval and depressed ; and the antennte very perfoliate — 

 such are the Tenebriones cuUnaris, 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 antennce are 

 almost globular, constitute the Phaleria, Dej. The Tenchrio 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 antennae, of which the four 

 last joints are alone globular. 



Another — peltoides — approaches Peltis and Cossyphus, Fab., in its flattened 

 form. Its antennae are hardly perfoliate; most of the joints, and even the last, 

 being in the form of a reversed cone. 



f The Trogositae cornuta, and maxillosa 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. ferrurjinea, Fab., also appears to constitute another by its antennae, 

 which abruptly terminate in a perfoliate club of three joints, the preceding ones 

 being very small and granose. 



X See Catalogue, &c., Dej., and Dahl., and for the other species, Fabricius, 

 Olivier, and Gyllenhal. 



