288 RHYNCHOPHORA. [Bagous. 



B. petro, Herbst. (limosus, Sharp's Cat. nee Gyll.). Oblong, black, 

 closely covered with grey scales which are somewhat uneven on the elytra ; 

 antennae with the first joint of the club glabrous, shining, and as long 

 as the following united, funiculus seven-jointed ; thorax very short, 

 about half as broad again as long, enlarged in front behind the apical 

 constriction and narrowed behind ; ashy grey with the apical border or 

 one or two dark patches on border denuded and dark ; elytra dull 

 black, convex, short and thick set, with coarse puncture.] striae, fifth 

 interstice without callosity towards apex ; femora dark, tibiae ferruginous 

 or red brown, tarsi pitchy. L. If- 2| mm. 



In brackish ditches; on aquatic plants; very local, and, as a rule, rare; Gravesend 

 and Sheerness (Champion); Netting Hill, on several occasions (Power) ; Hammer- 

 smith Marshes (H. S. Gorham) ; Harwich (J. J. Walker) ; Southsea, iu moss near 

 canal, not uncommon in spring (Moncreaff) ; Askham Bop, York ; Scarborough ; 

 it is possible that one or two of these localities ought to be referred to B. sub- 

 carinatus. 



B. cylindrus, Payk. Elongate, very narrow, linear, parallel and sub- 

 cylindrical, black, thickly clothed with ashy scales ; rostrum comparatively 

 long, evidently curved, glabrous in front, funiculns of antennae reddish ; 

 thorax slightly variable, longer than, or about as long as broad, with 

 the sides slightly rounded or almost parallel, very closely granulated ; 

 elytra at base about as broad as base of thorax, compressed and some- 

 what attenuate behind, very finely striated, without callosity before 

 apex ; legs long, pitchy, with the tibiae ferruginous, tarsi nearly as long 

 as the tibiae, with the third joint equal in length to the preceding; 

 lieok at apex of tibiae long and distinct. L. 2^-3 mm. 



Iu ditches, on aquatic plants ; rare, or, rather, extremely local ; Netting Hill 

 (one hundred and thirty specimens on October 24 and 31, 1863 (Power)); 

 Hammersmith Marshes (formerly common in a damp bank (S. Stevens) ); Gravesend 

 (Power and S. Stevens) ; London district, on watercre^ses (Stephens) ; Lee ; Sheppy ; 

 Whitstable (Champion) ; Pett Marshes, near Hastings, 1890 (Ford). 



B. binodulus, Herbst. This and the following are the two largest 

 British species belonging to the genus, and may be recognized by their 

 size apart from other differences ; oblong, black, closely covered with 

 brownish-grey scales, antennae, tibiae and tarsi more or less ferruginous ; 

 forehead depressed ; rostrum short and thick, moderately curved ; 

 thorax about as long as broad, constricted at apex, sides subparaljel, 

 with an indistinct central furrow, sculpture very close ; elytra sub- 

 parallel until posterior third, from whence they are rather abruptly 

 narrowed and depressed, with a strong prominent projection on the 

 fifth interstice towards apex, a warty prominence on the third interstice 

 behind middle, and a small shining callosity at the base of the first- 

 interstice, near scutellum. L. 4| mm. 



In ditches, &c. ; by sweeping aquatic plants and with the water net; very rare; 

 Battersea Fields (.Stephens) ; Sandwich (Sharp and Saunders) ; Arundi-1 (one speci- 

 men, Hamlet Cl-.nk) ; Norwich and Cry inly 11 Bog, Swansea (Stephens) ; ten districts 



