266 PHYTOPHAGA. [ Orsodacna. 
under-side is often dark, the remaining parts being lighter or darker 
rufous or testaceous ; occasionally the whole body is dark with the 
antenne and legs fuscous ; antenne moderately long, reddish ; scutellum 
smooth ; elytra more thickly and strongly punctured than thorax ; legs 
moderately long, testaceous. L. 43-8 mm. 
On whitethorn blossom, Umbelliferee, &e.; rare; Epping Forest; Coleford, 
Gloucestershire (Power) ; Matlock, Lovers’ Walks, not uncommon; I have found it 
on the only two occasions I have collected in this locality, and Stephens records it 
as having been taken plentifully in the district; Ripon (Waterhouse); Yorkshire 
(Blatch). 
Our specimens seem chiefly to belong to the var. chlorotica, Latr., 
which has the under. side, and usually the upper side, entirely testaceous, 
and the var. lineola, Lac., in which the under-side, vertex, suture, and 
lateral margin of elytra are dark ; the var. glabrata, F., which is entirely 
black, with the antenne and legs fuscous, has not, as far as I know, 
occurred in Britain. 
O. lineola, Panz., nec Lac. (nigriceps, Brit. Cat.). This species 
much resembles the preceding, and, like it, is very variable in size and 
colour ; it may, however, be known by the rather long pubescence of 
its upper surface, which is more thickly punctured ; the thorax is longer, 
and the under-side is more sparingly punctured and pubescent; the 
elytra in both this and the preceding species are sometimes broad and 
rather flat, and sometimes narrow and convex ; the head and breast are 
usually, but not always, black. L. 4-7 mm. 
On sallows, whitethorn blossom, &c.; rare; Ashtead (Blatch); Gravesend ; 
Darenth ; New Forest (Power) ; Matlock ; very common in a wooded valley on the 
Yorkshire Wolds on Spirea ulmaria in July (Allen Harker). 
V. humeralis, Latr. Deep violaceous-blue, almost black, with two 
red spots towards base of thorax and the shoulders of elytra reddish ; 
the upper surface is sometimes immaculate. 
On the blossom and in the decaying wood of the whitethorn; rare; Ashtead 
(Champion) ; Coombe Wood (1837) and Norwood (1887) (S. Stevens) ; Darenth 
(Power) ; New Forest (Stephens, Power, &c.). 
DONACIINA. 
This tribe contains two genera, Donacia and Hemonia, which are 
chiefly found in cold and temperate countries ; they are characterized by 
having the head prominent and somewhat narrowed behind the eyes, 
the antenne long and slender and not very distant at base, the thorax 
quadrate, much narrower than the elytra, which are punctured in 
distinct rows, and the posterior coxee widely distant; the first segment 
of the abdomen is equal to the rest taken together; the tibie are com- 
pressed on their exterior margin, and are more or less distinctly carinate, 
