172 RHYNCHOPHOBA. [Brachynhininw. 



usually prominent; metasternum long or compara- 

 tively long PHYLLOBIINA. 



B. Elytra short and broad with the shoulders rounded ; 



metasternnin very short PniLOPEDiNA. 



ii. Tarsal claws free. 



1. Thorax furnished with long hnirs at the sides behind 



eyes, which are prominent TANYMECINA. 



2. Thorax without long hairs at the sides behind eyes, 



which are not prominent. 



A. Tips of hind tibiae enclosed externally by a plate 

 fringed with spinules ; cpisterna of metasternum in- 

 distinct BARYNOTINA. 



B. Tips of hind tibiae without plate; episterna of 

 metasternum well marked ALOPHINA. 



OTIORRHYNCHINA. 



This tribe contains a large number of species, the majority of which 

 belong to the very extensive and important genus Otiorrftynchus, which 

 is very largely represented in Europe, and contains some of the most 

 conspicuous of our British Khynchophora : they are most closely allied 

 to the Brachyderina, from which they chiefly differ in the formation of 

 the scrobes and the club of the antennae ; the following genera occur in 

 Britain : 



I. Throat without special striation. 



i. Scrobes superior, entirely visible from above; 

 antennae long. 



1. Femora claviform, often dentate beneath ; 



tarsal claws free, equal OTroRRHYNCrrrjS, Germ. 



2. Femora not claviform, always simple beneath ; 



tarsal claws variable, connate in our species . . PJSRITELUS, Germ, 

 ii. Scrobes entirely or partially lateral, deep and 

 directed towards the eyes ; foroi short, stout and 

 robust ; antennae short and thick. 



1. Scape of antennas gradually thickened from 

 base to apex ; ventral segments of abdomen clothed 



with dull scales TRACHYPHLCEUS, Germ. 



2. Scape of antenna) strongly thickened and 

 produced into a prominence externally at 

 base; ventral segments of abdomen without 



scales CATHORMIOCERUS, Schonh. 



II. Throat with close strong and deep longitudinal 



striae C.ENOPSIS, Bach. 



OTXORRHYNCHUS, Germar (Braclnjrrliinus, Latreille). 



This is one of the most important genera of the Rhynehophora ; it 

 contains, at present, about four hundred species, of which the great 

 majority are found in Europe and the adjacent countries, the largest 

 number being attached to mountainous districts ; a certain amount are 

 found in Northern Asia and North America, but the North American 

 species (0. sulcatus, ligneus, rngifwns, maurus and monticola) have all 



