Dorothy J. Jackson 271 



3 I mm., elytra rather short, and broad, widesi across the middle and narrowed 

 anteriorly 8 Hum Una I \j]l, and 8. tibialis fferbst. ( = brevicollis Brit. Cat.). 

 in. Elytra without upstanding setae. 



'■ Dorsal portion of elytra with P u1 scales bui entirely clothed with fine flat 

 bans or setae. Size comparatively large, 5 6mm.; thorax with very large 

 punctures and the sides strongly rounded and dilated 8. cambricus Steph 

 - Dorsal portion of elytra more or less completely covered with scales inter- 

 spersed with flat hairs of setae which arc rarely absent. 

 A. Elytra with the sides almost straight, parallel and not becoming wider 

 behind the shoulders, and with the dorsal area, when view,,! sideways 

 only slightly curved. 

 a. Width of head across eyes almost equal to width of pronotum. 



aa. Elytra moderately long, with distinct, moderately long, almost flat 

 setae evenly distributed amongsl the scales and not arranged in 

 groups, pronotum comparatively short, rostrum with central dorsal 

 groove continued between the eyes, size 4-5 mm. 



*S. lineatus L. (Fig. 2). 

 66. Elytra shorter, setae shorter and principally arranged irregularly in 

 groups, pronotum comparatively longer, central groove of rostrum 

 not continued between the eyes. Size 6 mm. 



*8. puncticollis Steph. (Fig. 4). 

 6. Width of head across eyes distinctly narrower than width of pronotum. 

 Head deeply excavated between the eyes. Shoulders usually with a con- 

 spicuous patch of pale scales . . . *8. humeraHs Steph. (Fig. 7). 

 B. Elytra with the sides more or less rounded and the greatest width near 

 the middle, and with the dorsal area distinctly curved when viewed side- 

 ways. 



a. Head not excavated between the eyes but with a central groove, size 

 4 to 51 mm. 



ua. 



Scales ochreous or ochreous brown, thorax very finely and shaUowly 



punctured *8. flavescms Marsh. (Fig. 1). 



66. Scales coppery red or metallic greenish, punctures on thorax fine 

 but coarser than flavescens 



8. suturalis Steph. (and var. ononides Sharp). 

 b. Head deeply excavated between the eyes; size small, 2J-3 mm., elytra 

 sparingly covered with scales; a conspicuous patch of white scales on 

 the sides of the thorax and anterior abdominal segments 



*8. sulcifrom Thiin. (Kg. 5) 

 I propose to deal in detail with the species seriatim taking first 

 S. I meatus to which the remainder of this paper is devoted. 



SITONES LINEATUS L. 



In 1761 this species was described by Linnaeus (i) who records it as 

 being common in gardens and fields. It is now a well-known pest of 

 leguminous crops and is widely distributed throughout Europe. It is 



18—2 



