16 



EHYNCHOPHORA OF NORTH EASTERN AMERICA. 



The eyes may be either contiguous, approximate, or distant 

 on the upper part of the head, terms which explain 

 themselves, and in the rare Hoi-mops aljdurens they 

 are nearly joined below the head. They are often 

 partly or wholly concealed by a projecting postocular 

 lobe of the front margin of thorax and this lobe may 



Fig 21 Tar- be fringed with short stiff hairs to which the name 



sus of piaty- vibrissre has been applied. 



pus. 



The side pieces of the meso- and metasterna vary much in size 

 and shape, and these variations are used as primary characters 

 in separating the divisions of Otiorhynehime (Fig. 3) and the 

 isolating of the Barini. The middle process of the first ventral 

 extending forward between the hind coxa? may be acute, as in 

 Attelabime, or obtuse as in most ("urculionid* (Fig. 22, A. P..) 

 The ventral segments may be equal in length or there may be 

 great disparity between them in this respect. The sutures sepa- 

 rating them may be straight across or greatly curved, and in 

 Tychiini and some Ceutorhynchini the hind margin of one segment 

 is often so curved that the extremities project over and conceal 

 the sides of the succeeding segments. (Fig. 22, d.) 



Fig. 22. A, Middle process of first ventral acute; B, 

 same, obtuse; C, part of under surface of a Barinid, a, 

 mesosternal episternum; b, mesosternal epimeron extending 

 between the thorax, d, and the elytra, c, and truncating the 

 latter at the humerus; c, metasternal episternum; D, ventral 

 surface of a Tychiinid, showing the curved suture between the 

 second and third segments, the ends of the second projecting 

 backward almost to fourth. (After Bedel.) 



Combining the characters above described, and selecting those 

 we believe will be most easily apprehended by the reader, we have 

 the following key to the families of Khynchophora occurring in 

 our region : 



