218 RHTNCHOPHORA. [Sitones. 



ii. Elytra, if viewed sideways, with fine raised 

 setae or hair-, which are more or less depressed 

 towards apex, but are distinct from the general 

 pubescence. 



1. Sides of elytra narrowed from middle to base ; 



prevailing colour of scales brownish .... S. LINEELLUS, Gyll. 



2, Sides of elytra parallel ; prevailing colour of 



scales grey or silver grey. 



A. Thorax as long as broad ; eyes more pro- 

 minent S. TIBIALIS, Herbst. 



B. Thorax broader than long ; eyes less pro- 

 minent S. BBEVICOLLI8, SclwnJl. 



iii. Elytra without raised setse or hairs distinct 

 from the general pubescence. 



1. Eyes very prominent ; thorax with the sides 

 strongly rounded and dilated, and with 

 the sculpture consisting of large coarse punc- 

 tures, and very closely punctured interspaces S. CAMBRTCITS, Stepli. 



c? V. cinerasceni, Fahr. 



2. Eyes not or not strongly prominent; thorax 

 with the sides nearly straight or at most 



moderately rounded. 



A. Forehead deeply excavate from eye to eye. 



a. Breast pubescent ; side pieces of meso- 

 and metasternum squamose; size smaller ; 



scales somewhat coppery S. ST/LCIFROXS, Tkurib. 



b. Breast and side pieces of meso- and 

 metasternum with the same clothing; 

 size larger ; scales dull brown and grey- 

 ish, with a light patch at shoulders of 



elytra S. HUMEBALIS, Stepli. 



B. Forehead not, or only slightly, excavated. 



a. Thorax with the anterior margin distinctly 



raised. 



a*. Thorax with the sides moderately 

 rounded and the eyes rather promi- 

 nent S. LINEATUS, L. 



b*. Thorax with the sides nearly straight, 



and the eyes flat. 



af. Upper surface with the scales more 

 or less distinctly coppery, elytra with 



a light band along suture . . . . S. SUTUEAilS, Steph. 

 bf. Upper surface with dull scales, 

 elytra without light band along su- 

 ture S. ONONIDIS, Sharp. 



b. Thorax with the anterior margin not, or 



scarcely, raised, 

 a*. Rostral furrow ceasing just before or 



between eyes, sometimes absent and 



replaced by a puncture or stria ; 



length 6 mm S. PUNCTICOLIIS, Steph. 



b*. Rostral furrow continued nearly 



to anterior margin of thor::x. 

 af. Size large ; length 5-5^ mm.; 



upper surface very thickly clothed 



with brownish scales, which are 



scarcely at all variegated . . . . S. FLAVESCENS, Marsh. 



V. longicollis, Fuhr. 



