316 PHYTOPHAGA. [Phedon. 
In Dr. Power’s collection there is a doubtful specimen of Phedon, 
which must be apparently referred to this species; it has the elytra, 
however, much more strongly punctured, and the punctuation of the 
thorax also stronger and less even; P. betule, however, varies in this 
respect in different specimens, and I think Dr. Power’s specimen is an 
extreme variety ; it may, however, prove to be a new species, but in any 
case requires further confirmation, as it does not appear to agree with 
any described European species. 
This species must not be confounded with Plagiodera armoracie, the 
Chrysomela armoracie of Linné and Fabricius ; the nomenclature of this 
and the following species has given rise to much confusion, as the names 
betule and cochlearie have been applied to both; Linné’s Ch. betule, 
however, which was by Stephens and others supposed to be identical 
with this species, is in reality Phyllodecta (Phratora) vulyatissima, 
P. cochlearie, F., nec Panz. (levigatus, Duft.; neglectus, Sahlb.). 
Very like the preceding, but smaller and narrower, and of a brighter 
blue colour, sometimes with a strong greenish reflection ; the thorax is 
less closely punctured on disc than at sides, and the elytra have the 
humeral callosity very much less pronounced, and in many specimens 
almost obsolete ; the punctured striz of the elytra are moderately strong, 
and the interstices are extremely finely punctured; the anal segment of 
the abdomen is only testaceous at the sides. L. 23-85 mm. 
On Cruciferx ; also in marshy places at roots of grass, in moss, &c.; common and 
generally distributed throughout the greater part of the kingdom. 
P. concinnus, Steph. Very closely allied to the preceding, as a 
rule, of a bright green or golden green colour, but sometimes coppery, 
golden or greenish purple or blue; it may be distinguished from the 
foregoing species by having the upper surface more shining and the 
interstices of the elytra finely but evidently punctured and more or less 
rugose, and the striz less regular, the inner ones being finer and less 
distinct ; the humeral callosity is a little more pronounced, but this is 
not a very evident character; the antennz, which have the apex of the 
scape, as a rule, more or less ferruginous in P. cochlearie, are, in this 
species, entirely black. L. 23-35 mm. 
Salt marshes ; at roots of grass, in flood refuse, &c. ; very local; rare in England ; 
Gravesend (Marsh) ; Chatham (Walker) ; Southend (Stephens) ; Portsmouth district ; 
recorded from Stoke Wood, Devon, in Parfitt’s catalogue; Lancaster, in a marsh 
(Chappell) ; Scotland, locally abundant in salt marshes on a cruciferous plant, Solway 
and Clyde districts ; Mr. W. Lennon has sent it to me in plenty from a salt marsh 
near Dumfries. 
PHYLLODECTA, Kirby. (Phratora, Chevrolat.) 
_ This genus contains about twenty-five species, which are found chiefly 
in Northern Asia and Europe ; one or two have occurred in Syria and 
