290 RHYtfCHOPHORA. \_Bagous. 



darker ; thorax broad, angularly dilated in front behind constriction and 

 thence gradually narrowed to base, closely sculptured, with an indis- 

 tinct central ridge in front ; elytra broad, somewhat abruptly narrowed at 

 apex, with coarse punctured strise ; interstices convex ; legs dark, rather 

 long, tibiae and taxsi ferruginous. L. 3-3| rnm. 



In ditches, &c. ; on aquatic plants ; extremely local and, as a rule, rare ; Hammer- 

 smith Marshes (Gorham) ; Sbeerness (Walker); Notting Hill (Power); Gravesend, 

 in plenty, April 19, 1867 (Power); Woking (Marsh). 



B. tempestivus, Herbst. Elongate, rather narrow, black, varie- 

 gated with ashy and whitish scales ; antennae inserted at about the 

 middle of rostrum, ferruginous with the apex and club pitchy ; thorax 

 longer than broad, channelled, not much narrower than elytra, with the 

 scales usually much thicker at sides ; elytra elongate, subparallel, nar- 

 rowed at apex, with the shoulders, a large spot behind middle near 

 suture, a callosity on fifth interstice, and many scattered specks and 

 spots white ; punctured strise fine, alternate interstices very slightly and 

 scarcely visibly elevated ; legs dark, tibiae ferruginous, tarsi elongate, with 

 the second joint plainly longer than broad. L. 2| 3 mm. 



In ditches ; on aquatic plants ; local, but common where it occurs; Tottenham 

 Barnes ; Hammersmith ; Notting Hill (abundant 1863 (Power) ) ; Sheerness ; Graves 

 end (in plenty, April 19, 1867 (Power) ); Wbitstable; Bearsted, near Maidstone 

 Harwich ; Southsea, canal, common in moss in spring (Moncreatf) ; Robins Wood 

 liepton. 



B. lutulosus, Gyll. Allied to the preceding but evidently broader 

 and stouter, much less, although distinctly, variegated, and with the 

 thorax considerably narrower than the elytra, subtransverse, and plainly 

 rugose ; the elytra have the alternate interstices evidently, although not 

 strongly, raised ; the tibiae are shorter and more thickened, and the tarsi 

 are evidently shorter and have the three first joints transverse. L. 

 2^-3 mm. 



Sandy districts ; by sweeping herbage in damp places ; occasionally in sand pits ; 

 rare; Barnes, Ashtead, Shirley, Esher (Champiox) ; Esher, Horsell and Woking 

 (Power) ; Lumps Pond, Southsea (Moncreaff) ; Armagh, one specimen in moss from 

 edge of a small lake (Johnson). 



B. frit, Herbst. (siibcarinatus, Gyll., teste Bedel). Of the same form 

 as JB. nodulosus, and, according to Thomson, distinguished from all the 

 other species by having the thorax somewhat broader than long, closely 

 and distinctly and subrugosely punctured, with a channel in the centre, 

 and with a white line on each side ; the elytra compressed and acumin- 

 ate behind and submucronate at apex, with the alternate interstices not 

 raised, and the fifth evidently callose, and with a white spot a little be- 

 hind middle spreading over the third and fourth interstices ; the tibiae 

 are straight ou their outer side and abruptly incurved just at apex ; and 

 the tarsi are about half the length of the tibiae, with the second joint 

 slightly transverse, and not narrower than the third ; according to Bedel 



