346 RHYNCHOPHORA. [Ceuthorrliynclius. 



C. setosus, Boh. (atomus, Boh.). A small black, rough-looking, 

 rather shining species, upper side scantily clothed with white setee, 

 underside with whitish scales ; rostrum slender, scarcely as long as head 

 and thorax ; head closely punctured, rather depressed between eyes, 

 which are not prominent ; thorax rather short, with the anterior border 

 raised, narrowed and constricted in front, coarsely punctured, with a 

 more or less distinct central furrow, and a- very feeble tubercle on each 

 side ; elytra with deep punctured striae, nearly as broad as the inter- 

 stices, which are, at least in part, divided into squares by transverse 

 striae, and are furnished with rows of white setae ; legs moderately stout, 

 black, femora not toothed. L. 1 1 mm. 



Male with the posterior tibias armed with a small hook at apex and 

 with the rostrum shorter than in female. 



Sandy places; on Iberis amara (Bitter Candytuft) and Nasturtium officinale; 

 extremely local, but not uncommon where found; Claygate, Esher, Mickleham, 

 Horsell, Ashtead, Reigate. Dartford ; Bushey, Herts; St. Faiths Norwich; Braii- 

 don, Suffolk ; Cowley ; Plymouth ; Whitsand Bay, near Plymouth. 



C. constrictus, Marsh. Short ovate ; entirely clothed with 

 greyish scales, which are thicker on the under side than on the upper, 

 and are arranged in ' biseriate rows upon the elytra ; head closely ' 

 punctured, eyes not prominent, rostrum moderately long and slender,' 

 antennae dark, ferruginous at base ; thorax a little broader than long, with 

 the anterior margin raised, constricted at apex, but with the sides before 

 the constriction subparallel and slightly rounded, closely and distinctly 

 punctured, central furrow not very plain ; elytra rounded at shoulders, 

 with broad strise, which are nearly as wide as the interstices ; legs rather 

 stout, black, with grey scales, femora not toothed. L. 1-t mm. 



On TSrysimum alliarium ( = Alliara officinalis, Garlic Mustard) and (rarely) oa 

 Sisymbrium ; local, but not uncommon where it occurs; Hammersmith, Highgate, 

 Norwood, Putney, Mickleham, Caterham, Belvedere, Lee, Favershain, St. Mary 

 Cray, Tonbridge, Beat-stead, Boundstone, &c. ; Folkestone ; Hastings ; Portsmouth 

 district, sometimes common in June on the garlic mustard ; Glanville's Wootton 

 (common) ; Swansea ; Woodbastwick and Horning, Norfolk ; Scotland, rare, Forth 

 and Moray districts ; the Scotch records are rather remarkable as it has not occurred 

 in any intervening districts. 



C. cochlearise, Gyll. (atratulus, Gyll.). Short and broad oval, 

 convex, deep black, rather shining, upper surface with scanty greyish 

 pubescence, which is hardly apparent, and a distinct patch of white 

 scales at base of suture of elytra ; underside thickly clothed with whitish 

 scales ; head closely punctured between eyes, rostrum moderately long, 

 rather dull, antennae pitchy with club black ; thorax narrowed and con- 

 stricted in front, with anterior margin raised, central furrow distinct, 

 punctuation strong and not very close ; on each side there is a small 

 tubercle ; elytra rounded at shoulders, with deep punctured striae, 

 interstices rugose ; legs moderately long, black, femora not toothed, 

 tarsal claws simple, rather slender. L. 1| mm. 



