328 PHYTOPHAGA. [ Galerucella. 
and central line of thorax, and the scutellum and humeral prominences, 
blackish ; head large, antenne long, dark ; thorax transverse, with the 
sides angled in the middle; elytra very thickly and finely, almost 
rugosely punctured, entirely rounded at the apical sutural angle ; legs 
moderately stout, testaceous. L. 43-65 mm. 
Male with the fifth ventral segment of the abdomen deeply impressed 
in a semicircle. 
Female with the fifth ventral segment broadly incised subtriangularly 
at apex. 
On Viburnum opulus (the Guelder Rose), and more rarely on Viburnum lantana 
(the Wayfaring-tree) ; local ; London district, not uncommon, Darenth Wood, Lee, 
Woking, Forest Hill, Mickleham, Rusper; Weston, Oxon; Hastings; Glanvilles 
Wootton; Swansea; Knowle, near Birmingham ; Leicester ; Robins Wood, Repton ; 
Scarborough; Northumberland and Durham district ; Scotland, Solway district, 
‘‘ Raehills, Rev. W. Little,’” Murray’s Cat. 
G. nymphee, L. Oblong, rather depressed, fuscous black or dark 
brown, with the front of head, the thorax (except two or three dark 
spots), the border of the elytra and the greater part of the legs rufo- 
testaceous ; head rather large, with a furrow in front, antenne short and 
stout, dark with reddish base ; thorax angled in middle of sides, with the 
dise shiny and almost impunctate, with one or two fovee in centre, and 
one at each side, the latter being thickly and almost rugosely punctured ; 
elytra subparallel, clothed with fine greyish pubescence, thickly, rather 
coarsely, and somewhat rugosely punctured, with distinct traces of raised 
lines, and with the sutural angle of each produced into a short sharp 
point ; under-side clothed with whitish silky pubescence ; legs reddish- 
testaceous, with the base of femora and the tibiz more or less infuscate. 
L. 6-8 mm. 
Male with the fifth ventral segment of abdomen deeply impressed 
triangularly at apex, and the posterior tibie slightly curved. 
Female with the fifth ventral segment narrowly but deeply incised at 
apex. 
On aquatic plants, especially species of Nymphea and Nupar ; local, but not un- 
common in many districts; Snodland, Kent ; Tooting, Surrey; Aylsham ; Pegwell 
Bay; Deal; Hastings; Arundel; Hants ; Glanvilles Wootton ; Swansea ; Gloucester ; 
Coleshill; Knowle; Cannock Chase; Horning Fen; Cheshire; Scarborough ; 
Northumberland and Durham district, not common; Scotland, Tweed and Forth 
districts; Ireland, near Dublin and Armagh. 
G. sagittariez, Gyll. (aquatica, Foure.). Very closely allied to 
the preceding, and by many authors regarded as merely a variety ; it 
may, however, be known by its colour, which is much lighter, being 
obscure yellow-testaceous, and by the duller forehead, which is 
extremely finely punctured, but especially, according to Weise, by 
having the sutural apical angle of the elytra rounded and not produced ; 
the large foveee at the sides of thorax are more finely punctured, and 
the general size is smaller ; the colour differences are often misleading in 
