58 OTIORHYNCHID^. [Horn. 



Tribe II. OTIORHYK€HI9iI. 



Antennae long, scape always passing the eyes behind. Scrobes variable 

 but never at the same time linear and directed inferiorly. Mctastcrnal side 

 pieces usually entirely concealed by the elytra, rarely of moderate width. 

 Mesosternal epimera small. Elytral striae entire in all our genera, tenth or 

 marginal always distant from the preceding in its entire length. 



It is extremely difficult to give characters which define tribes of Rhyn- 

 chophora with any degree of certainty, and it is frequently found that a 

 species can only be assigned a position by tlie consideration of almost its 

 entire structure with considerable allowance for facies, and not a little, by 

 the experience of the student. 



Some of the genera placed in the OtiorhyncJiini by Lacordaire, have been 

 removed and will constitute portions of tribes in Division ii, with wide 

 metasternal side pieces. 



Our genera form four groups which may be distinguished as follows : 

 Funicle 6-jointed ; articular surface of hind tibiae 

 enclosed, tips of hind tibiae truncate with 



broad ovalspace At^raphi. 



Funicle 7-jointed ; articular surface free, tips of 

 hind tibiae with a single row of fimbriae. 

 Claws free. 



Antennae long ; outer joints of funicle long. otiorhynchi. 



Antennae shorter; outer joints short or moni- 



liform Tracliypliloel, 



Claws connate. 



Antennae as in OtiorTiyncM Peritell. 



The Periteli are placed after the Otiorhynchi from their greater similarity 

 of form and structure, the only diflference between the two tribes is found 

 in the claws. 



Group I. Agraphi. 



Antenna? moderate, scape longer than the funicle and club, moderately 

 arcuate ; funicle 6-jointed ; club broadly oval slightly flattened, composed 

 in great part of the first joint only, the other joints retracted and very in 

 distinct. Tarsi long, slender, third joint very feebly emarginate and 

 scarcely wider than the second. Hind tibiae truncate at tip with broad, 

 oval smooth space, cotyloid cavities internal. Anterior tibiae with outer 

 apical angle slightly prolonged ; anterior and middle tibiae witli inner angle 

 mucronate. 



The above characters appear to warrant the separation of Agraphus as a 

 group by itself as suggested by Lacordaire who, however, failed to notice 

 the structure of the antennal club and placed the genus in a group in 

 which the hinder cotyloid cavities are open. These latter are really very 

 strongly cavernous, more so in fact than in any other genus in our fauna. 



Agraphus alone constitutes this group. 



