392 IN SECT A. 



dibles eraarginated or dentated at the extremity, and the palpi terminated by a 

 large joint ; the last joint of the maxillary palpi is very large, transversal' 

 compressed, and almost lunate. The form of their organs of manducation 

 shows them to be gnawers, and in fact the species indigenous to Europe are 

 found in the Boleti which grow on the trunks of trees, under their bark, &c. 



Some have the penultimate joint of the tarsi bilobate, and do not contract 

 themselves into a ball. 



They may be reunited in the single genus 



EROTYLUS, Fabricivs. 



In the Erotyli properly so called, the intermediate joints of the antenna- are 

 almost cylindrical, and the club, formed by the last ones, is oblong ; the inte- 

 rior and corneous division of their maxillae is terminated by two teeth. 



They are peculiar to South America. 



In the fourth section of the Coleoptera, that of the TRIMERA, there are but 

 three joints to all the tarsi. The Trimera form three families. Those of the 

 two first are closely related to the last of the Tetramera. Their antenna-, 

 always composed of eleven joints, terminate in a club formed by the three last, 

 which is compressed and in the form of a reversed cone or triangle. The first 

 joint of the tarsi is always very distinct; the penultimate is usually bilobate, 

 and the last, which presents a knot at base, is always terminated by two hooks. 

 The elytra entirely cover the abdomen and are not truncated. 



FAMILY I. 



FUNGICOL^E. 



IN our first family of this section we observe antennae longer than the head 

 and thorax united, an oval body, and a trapezoidal thorax. The maxillary 

 palpi are filiform or a little thicker at the end, but are terminated by a very 

 large and securiform joint. The penultimate joint of the tarsi is always 

 deeply bilobate. 



This family may be reduced to one great genus. 



EUMORPHUS, Fabricius. 



In the Eumorphi proper, the club of the antenna; is abrupt, compact, 

 strongly compressed, and in the form of a reversed triangle. The maxillary 

 palpi are filiform, and the two last joints of the labials united form a trian- 

 gular club. In some, however, the third joint of the antenna; is much longer 

 than in others, and authors have divided them into Da/vet, where the club 

 of the antenna; is narrow, elpngated, and jointed ; Endomychus, where the 

 four palpi are thickest at the extremity, and the three last joints of the antenna? 

 separated laterally, composing a club in the form of a reversed triangle. 



They are all peculiar to America and the East Indies. 



