Sibinia.] RHYNCHOPHORA. 303 



i. Elytra with a large common yellowish-brown or 

 browuish spot behind scutellum (usually contracted 

 in middle). 



1. Antennas and anterior portion of rostrum more 



or less red ; length 2-2 mm S. ARENARI.E, Steph. 



2. Antennae and anterior portion of rostrum black 



or pitchy; length 1^-2 mm S. PEIMITDS, Herbst. 



ii. Elytra without a spot behind scutellum ; antenna?, 



rostrum and legs red or ferruginous S. SODALIS, Germ. 



(S. pellucens, Scop, (canus, Herbst.). Ovate, broad, black, upper 

 surface clothed with greyish-white or greyish-yellow brown pubescence 

 or hair-like scales, underside with white pubescence ; antennae pitchy at 

 base, black towards apex ; rostrum stout, slightly curved, punctured, 

 pubescent from base to the insertion of the antennae and from thenco 

 glabrous ; thorax shorter than its breadth at base, narrowed in front, 

 sinuate at base, closely sculptured, often with a lighter central line ; 

 elytra scarcely broader at base than thorax, with the shoulders elevated 

 and rounded, and with narrow and obsoletely punctured striae, interstices 

 flat, alternate ones sometimes lighter ; legs stout, pubescent, black with 

 the claws red, femora not toothed. L. 3-4 mm. 



On Lychnis dioica ; the larva undergoes its transformations in the seed capsules ; 

 very rare; two specimens were taken by Mr. Sidehotham early in Juue, 1864, by 

 sweeping in a lane between Devizes and Poltern, and another about the same time by 

 Mr. Edleston at Knutsford, near Bowdon, in Cheshire.) 



S. potentillse, Germ. Broad oval, black, upper surface thickly 

 clothed with narrow piliform fawn coloured or reddish brown scales, 

 variegated minutely with whitish scales, underside with broader whitish 

 scales ; antennae dark, pitchy at base with the club globose ovate ; 

 rostrum gradually narrowed in front, slightly curved ; thorax mostly 

 ferruginous, with the central line and sides lighter, transverse, with the 

 sides rather strongly rounded, and much narrowed in front, closely 

 sculptured ; elytra broad and ample, rather wider at base than base of 

 thorax, sometimes almost unicolorous, but usually with the shoulders 

 and a sutural band lighter ; legs dark or pitchy- red, pubescent. L. 

 2|-2f mm. 



Sandy places ; on Spergula arvensis, &c. (the Corn Spnrry) ; local, but not 

 uncommon where it occurs ; Weybridge, Shirley, Woking, E>her, Caterham, 

 Ripley, Wimbledon, Ashtead, Birch Wood, Belvedere, Horsell, Byfleet; Windsor; 

 Ashwicken, Cambridge ; Brighton ; Shirley Warren, Southampton (abundant, 

 Gorham) ; Portsmouth district (Moncreaff); Kidderminster (Blatch). 



S. arenarise, Steph. Oblong-ovate, black, with the base of the 

 antenna?, apical portion of rostrum, tibiae and tarsi reddish upper surface 

 thickly clothed -with greyish-yellow scales, underside with a thick 

 crust of whitish or greyish white scales ; rostrum rather long, moderately 

 curved, thorax about as long as its breadth at base, almost conical, 

 constricted before apex, with two broad irregular reddish-brown or 



