264 HHYNCHOPHOHA. [Erif-flliniltCt. 



ERIRRHININA, 



This is a large and important tribe, which has been very variously con- 

 stituted; from the curculionina (Hylobiina) it may be distinguished by the 

 long and slender rostrum and by the fact that the opening of the scrobes 

 is not visible from above ; from the Bagoina it differs in the formation of 

 the third tarsal joint, and from the Hyperina by the stronger hooks at 

 the apex of the tibiae, the more or less distinctly carinate rostrum, and the 

 fact that the trochanters are usually furnished with a long outstanding 

 seta; considerable confusion has existed with regard to the division of the 

 old genus Erirrhinus, and great confusion has lately arisen as to its 

 nomenclature owing to the fact that Dorytomus of Sahlberg (1823) has 

 been discovered by M. Bedel to be identical with Erirrhinus of Stephens 

 (1831), and therefore a new name (Eteopliilus) is proposed by him for the 

 Dorytomus of Stephens, and the well-known name of Erirrliinus is sunk 

 altogether, the name of the tribe also being changed to Dorytomina : 

 I have, however, preferred to adhere, as far as possible, to the old 

 arrangement, as, according to Bedel's nomenclature, Dorytomus means 

 one genus with him, and another with Stephens, Thomson and other 

 authors, and besides this the authorities for the so-called type species 

 are in many cases insufficient and sometimes erroneous. 



Tho British genera may be divided as follows : 



I. Anterior femora simple. 



i. Elytra with I'ows of thick raised setae on the alter- 

 nate interstices ; third joint of the tarsi without 

 setose pubescence beneath. 



1. Shoulders not marked, completely rounded off; 



thorax scarcely narrowed before apex .... OETHOCHJETES, Germ. 



2. Shoulders well marked ; thorax rather strongly 



narrowed before apex PSEUDOSTYPHLUS, Touru. 



ii. Elytra without rows of raised setae on the alternate 

 interstices ; third joint of tarsi with setose pubescence 

 on each lobe beneath. 



1. Scape of antennas inserted nearly at apex of 



rostrum ; scrobes commencing close to mouth . PEOCAS, Steph. 



2. Scape of antennae inserted at some distance from 

 apex of rostrum ; scrobes not commencing close 



to mouth. 

 A. Elytra with the tenth (or marginal) stria 



effaced or rudimentary PACHYTYCHITIS, Jckel. 



13. Elytra with the tenth stria entire. 



a. Anterior tibiae straight; prosternum broad 



before the anterior coxao GETPIDIUS, Steph. 



b. Anterior tibiaa more or less curved; pro- 

 sternum not broad before the anterior 



coxae, 

 a*. Prosternura emarginate in front without 



a distinct transverse line ; elytra glabrous 



or pubescent, without short scales ; eyes 



oval, depressed ERIERHINTJS, Sclwnh. 



b*. Prosternum truncate in front and bordered 



by a well-marked transverse liuej elytra 



