Ceuthorrhynchidius.] RHYNOHOPHORA, 363 
among the Curculionide to determine from descriptions merely, 
although when placed side by side the differences are much more obvious, 
L. 14-2 mm. 
By sweeping herbage ; especially in chalky places ; probably on Cruciferae ; local, 
but not uncommon where it occurs ; Shirley, Croydon, Riddlesdown, Mickleham, 
Darenth, Chatham, Dartford, Faversham, Maidstone, Cowley, Dorking, Claygate, 
Crohamburst, Tottenham, &c. ; Littlington, Cambridge ; Brighton; Exmouth; Rep- 
ton (W. Garneys) ; Northumberland district, rare, Wooler Haugh. 
C. melanarius, Steph. ($ convevicollis, Boh., 2 glaucus, Boh.), 
Black, upper surface rather scantily clothed with whitish scales, under- 
side thickly clothed with compact scales ; on the upper side the seales 
are thicker at sides and at suture, where they generally form a strong 
or distinct band, which is nearly always absent in C. nigrinus and less 
marked in C. floralis ; from the latter species it may further be known 
by having a row of white hairs inserted in the strie of the elytra, and 
the anterior margin of the thorax less raised ; the shape also of the 
elytra is less round and the shoulders are more marked ; from 
C. nigrinus it may easily be separated by having the base of the thorax 
plainly bisinuate and produced into a point before scutellum. LL, 12— 
1¢ mm, 
In marshy places, ditches, &e.; on Nasturtium officinale ; local, but not uncom- 
mon where it occurs; Weybridge, Horsell, Cowley, Lee, Staple (Kent) ; Cromer; 
Ditchingham; Wroxham ; Arundel; Lymington; Portsmouth district; Bewdley ; 
Salford Priors; Evesham ; Tewkesbury ; Repton; Manchester district, general ; 
Northumberland and Durbam district; the only record is “Durham,” Ormsby’s 
Durham, and it has not beén recorded from Scotland. 
C. posthumus, Germ. (pumilio, Gyll.; $ asperulus, Boh. ; Poweri, 
Rye). A pretty and very distinct little species; short, ovate, pitchy- 
brown or reddish-brown, shining, with the head and thorax except the 
anterior margin of the latter darker ; the colour, however, is somewhat 
variable ; rostrum reddish-brown, somewhat pitchy at apex ; antenne 
fuscous, with the club darker, globose-ovate ; legs reddish-yellow, 
femora sometimes darker; upper side with rather scanty greyish scales, 
underside rather thickly set with scales ; rostrum long, thin, and curved, 
very finely striate, shining ; thorax short, transverse, strongly constricted 
before apex, bisinuate at base, closely punctured, with an obsolete 
tubercle on each side ; elytra short and broad, almost round, with rows 
of strong crenate punctures, and narrow interstices, which are fur- 
nished with double rows of white setz, sides and apex slightly muricate. 
L. #-1} mm. 
Sandy places; on Teesdalia nudicaulis; rare ; Weybridge, Frensham, near Farn- 
ham, and Boundstone, Surrey (Power) ; Silverdale, near Lancaster (Sidebotham) ; the - 
species is found in April and May ; Dr. Power's are dated May 2nd, 1869, and April 
10th to 16th, 1873. 
C. terminatas, Herbst. (apicalis, Gyll.). Black, moderately shiny, 
with very scanty and scarcely apparent greyish pubescence; underside 
