366 PHYTOPHAGA. [ Phyllotreta. 
vertex strongly punctured, antennz black with the base testaceous ; 
thorax rather strongly punctured ; elytra subparallel until a little before 
apex, strongly punctured, the punctures being arranged in rows at base, 
and being finer and confused behind middle ; legs black, with the apex 
of anterior femora, the knees of the intermediate and posterior pairs, the 
under-side of the tibie and the tarsi reddish. L. 13-1$ mm. 
On Nasturtium amphibium and other Crucifere ; local, but not uncommon in 
several districts; London district, generally distributed and common ; Norfolk ; Cam- 
bridge ; Hastings; Pulborough, Sussex; Portsmouth district; Glanvilles Wootton ; 
Repton ; Manchester district, general ; Scotland, very rare, Solway district. 
P. undulata, Kuts. (flexuosa, Redt., nec Il.). Oblong oval, depressed, 
black, shining, thorax with a slight «neous reflection, elytra with a 
longitudinal yellow band on each, which is broadly and _ shallowly 
emarginate on its outer side, and has the inner side almost straight until 
near apex, where it is abruptly curved inwards and narrowed ; antenne 
black, with base pitchy or ferruginous, first joint dark, except at apex ; 
thorax rather thickly and strongly punctured; elytra distinetly punctured 
in rows, the punctuation becoming finer and more confused towards 
apex ; legs black, tibie reddish at base. L. 2-2{ mm. 
Male with the fourth and fifth joints of the antenne slightly thickened. 
On Crucifere, especially turnips; generally distributed and common in England, 
and probably Ireland; Mr. Bold has the following remark in his catalogue of the 
Insects of Northumberland and Durham (p. 104): —‘‘ This species, and not P. nemorum, 
is the ‘turnip-fly’ of our district. Its smaller size, and nearly black legs, readily 
separate it from the latter.’ Dr. Sharp’s Scotch record, ‘rare, Solway and Tay 
districts,’”? seems, therefore, rather strange. 
P.nemorum, L. Larger on the average than the preceding, and 
less depressed ; it may readily be known by having the tibie entirely 
reddish-yellow, or only slightly infuscate, and by the lighter base of the 
antenne ; the yellow band on the elytra is slightly waved and not so 
straight on its inner side, and the male has the fourth joint of the 
antenne somewhat strongly, and the fifth moderately, incrassate, and 
the sixth joint short. L. 23-3 mm. 
On Cruciferee, especially turnips; generally distributed and far too common 
throughout the greater part of the kingdom; Mr. Bold, however, says that it is rare, 
according to his experience, in the Northumberland and Durham district. Dr. Sharp 
records it as very common in the south of Scotland. 
P. flexuosa, IIl., Kuts., nec Redt. (fallax, Ail.). Subovate, rather 
convex, black, shining, with the base of the antennz and tibiz obscurely 
ferruginous; thorax without metallic reflection, finely and rather thickly 
punctured ; elytra with a longitudinal yellow band on each, which is 
almost straight on its inner side, and moderately deeply emarginate 
externally in a semi-oval ; the black space on dise between the yellow 
bands is very broad and almost parallel-sided ; the species rather closely 
resembles P. tetrastigma, but has the punctuation of the thorax and 
elytra closer, the punctures of the latter being arranged in more distinct 
lines, L. 25-23 mm. 
