OTIORHYNCrilDAE. 443 



minal segment rnucli longer than tlie two following united, sepa- 

 rated from the first by a ^^trong•ly areuate suture. Metasternal 

 side pieces connate with the metasternum without evidence of 

 sutures. Seventh joint of the funicle of the antennie very close 

 to the club. 



The form and vestiture of the tarsi separate tliis group from 

 the Strangaliodes and the structure of the abdomen from the 

 Ophryastes. The rostrum and the scrobes are not unlike those 

 of Ophryastes. 



lihigopsis effracta, on Yucca, in Southern California, is the 

 only species known to us. 



Group III. — Strangaliodes. 



The group, as comprised in the following table, is not precisely 

 that intended by Lacordaire. There are without doubt several 

 genera which should be placed in his Eremnides, but with the 

 exception of Phyxelis we can find no genus presenting such 

 marked differences in the form of the scrobes as to render it 

 possible to draw the line with any degree of accuracy between 

 those genera in which the scrobes are strictly lateral and those 

 with the scrobes arcuate and directed inferiorly. 



The arrangement of the genera in the following table exhibits 

 a gradual transition in the form and length of the rostrum, from 

 Dichoxenus which approaches most nearly Ophryastes in this 

 respect as well as in the structure of the scrobes and abdomen, 

 to Phymatinus with a long rostrum almost entirely lateral scrobes 

 and normal abdomen. Cimbocera by its narrower tarsi and the 

 structure of the antenna? approaches Ophryastes in another direc- 

 tion. Melamomphus resembles Aniomphus in form. 



The following table is the result of a study in which the serial 

 arrangement exhil)its — 



Fird, a gradual transition in the form of the rostrum, from the 

 more robust to the elongate. 



iSecond, the tendency of the scrobes to change from the strongly 

 arcuate to the nearly straight and shallow form. 



Third, the structure of the abdonuMi, with the tliive interme- 

 diate segments nearly e(pml (as in Ophryastes) U) those with 

 the abdomen of normal structure. 



Fir.'^t suture of alxlouien strai;;lit ; .second sef:;m('iit rarely as long as, never 

 longer than the two following united ; hind tibia? usually mutic; 



