196 RHYNCHOPHORA. [| Troptphorus. 
with greyish-coppery or dull golden scales; very like the preceding in 
general appearance, but easily distinguished by not having the interstices 
costate, as well as by its lighter colour; the elytra at the sides of base 
plainly project beyond the basal angles of the thorax, and their basal 
external angles are prominent in front; from these angles to the middle 
the elytra are gradually and feebly widened; the striz are somewhat 
coarsely punctured, but are much hidden by the seales in fresh 
specimens ; suture somewhat elevated behind ; femora black with 
metallic hairs ; tidiz and tarsi ferruginous or pitchy. L. 6} mm. 
On Mercurialis perennis, especially in chalky districts; local, but not uncommon 
where it occurs ; Mickleham; Hastings; Devon; Swansea; Herefordshire; Knowle; 
Bewdley; Repton and neighbourhood ; Manchester district, general but not common ; 
Liverpool district ; York; Scarborough; Teesdale; Northumberland and Durham 
district; Scotland, common in flood refuse, Solway, Forth, Tay, Dee, Moray and 
probably other districts; Ireland, near Dublin, frequent, near Belfast, &c. 
T. obtusus, Bonsd. Very like the preceding: in fact Thomson 
(Skandinaviens Coleoptera vii. p. 145) has described it as the female 
of that species ; it may, however, be known by having the basal external 
angle of the elytra truncate and obtuse, and coinciding with the external 
angle of the thorax, rather abruptly enlarged from that angle to the first 
fifth of their length and thence very slightly deflexed ; the suture of 
the elytra is less raised at apex and the central carina of the thorax is 
not so strongly marked, and the interstices, moreover, of the elytra are 
flatter. L. 63 mm. 
Very rare; taken by Dr. Sharp on the banks of the water of Cairn between 
Trongray and Dunscore, Dumfriesshire. I have a specimen among some duplicates 
given me by Dr. Sharp which must, I think, be referred to this species; the central 
line of the thorax, however, is strongly marked. 
PHYLLOBIINA. 
This tribe, as here constituted, contains the following British genera, 
Phyllobius, Polydrusus, Liophleus and Barypeithes (the latter genus 
only containing B. sulczfrons), and also Seythropus, Schén., Ptochus 
Sch6n. and Argoptochus Weise ; its members are distinguished by having 
the tarsal claws connate, and also by the more or less elongated elytra, of 
which the shoulders (except in Barypeithes) are well marked and promi- 
nent, and the long or comparatively long metasternum ; many of the 
species are covered with exceedingly brilliant golden green scales and 
are very beautiful and conspicuous insects; the introduction of the 
genus Barypeithes by Bedel causes a certain amount of confusion, and it 
is probable that it may have to be differently located; the arrangement 
here adopted is of great advantage as bringing Phyllobius and Polydrusus 
into close connection ; these two genera are extremely closely allied both 
in general appearance and habit, but have usually been placed in 
different tribes. 
