ATHOUS. 41 



close and rather strong ; third joint of antennae more than 

 double as long as second. Male elongate, Hattish, with sides 

 of thorax straight and of elytra parallel ; female moderately 

 elongate, convex, with sides of thorax slightly rounded and 

 elytra sometimes very slightly dilated beyond middle. L. 

 4 — 4| 1. Common. A. longicollis, 01. 



b. Antennae strongly sawlike from third joint ; second 

 to fourth tarsal joints gradually diminishing in length 

 and breadth. 



Black, dull ; thorax and elytra sometimes brown. Pu- 

 bescence on head and thorax only moderately close but 

 long ; elytra partly bare but with base, a curved spot from 

 shoulder to suture, a zigzag band behind middle and the 

 apex closely covered with gray hairs ; third joint of an- 

 tennae fully double as long as second. L. 6 — 7 1. Very 

 rare. A. undulatus, De G. 



Corynihites. 



A, Third joint of antennae almost as broad as fourtli. 



a. Second joint of antennae roundish. 



I, Antennae longer than head and thorax, comblike in 

 male ; sawlike in female. 



1, Thorax with strong central furrow. 



A A. Male with comblike processes on antennae 

 fully double as long as the joints ; female with 

 interstices on elytra convex. 



Brassy, with some greenish reflection. Joints of an- 

 tennae in female cut off obliquely at apex, inner apical 

 angle prominent. L. 6 — 8 1. Not uncommon. 



C. pectinicornis, Lin. 



S B, Male with comblike processes on antennae 

 scarcely longer than the joints ; female with 

 interstices on elytra flat. 



Coppery, violet or greenish-bronze ; elytra yellowish from 

 base to beyond middle. Joints of antennae in female cut 

 off straight, inner apical angle moderately sharp. L. 6 — 

 7 1. Eather common. C. ctcpreus, Fab. 



The variety C. aeruginosus, Germ., has whole of elytra 

 coloured like thorax. 



2» Thorax without central furrow. 



