Hemonia. | PHYTOPHAGA, 279 
local, but abundant where it occurs ; London district, Gravesend, Sheerness; Alde- 
burgh, Suffolk; Birchington, near Margate; Hull; Hartlepool, abundant; the old 
records from Cambridge aud Windsor probably refer to the succeeding species. 
According to several authors, H. Ourtisi is merely a variety of H. 
zoster, which is the name given to the British species by Stephens, 
but of which the type form does not appear to have been recognized as 
found in Britain ; it seems, however, to differ only in having the punc- 
tures of the strie of the elytra and not the strie themselves black, and 
in having the black thoracic lines more pronounced; Weise describes 
H. zoster as “ thorace nigro-bilineato,” and H. Curtist as “thorace 
bimaculato,” but specimens of the latter insect have the markings on 
thorax evidently consisting of two lines. Stephens mentions the 
inner apical angle of the elytra as being rounded in this species and 
produced into a slight spine in the following, but it is certainly some- 
times produced in H. Curtisi ; there is, however, considerable confusion 
still existing between the species; Thomson, for instance, gives H. 
zostere, H. Curtisi, and H. Gyllenhali as distinct species, whereas by 
Weise they are all regarded as one species. 
H. appendiculata, Panz. (equiseti, F.). Closely allied to the pre- 
ceding, but with the spine at the apex of the elytra longer and the 
striz deeper, more deeply punctured, and blacker; the femora are more 
distinctly clavate, and the apex of the femora and tibix, as well as the 
apex of the joints of the tarsi, is black; the lateral callosity before the 
anterior angles of the thorax is less distinct, and the thorax itself is a 
little longer; the general size is larger; the species may be further 
known by its habitat, as it is found inland, whereas Hl. Curtisé appears 
to be confined to the neighbourhood of the coast. L. 55-83 mm. 
On aquatic plants; extremely rare; two specimens are recorded by Stephens as 
taken near Windsor; the only British specimen that I have seen is one that was 
taken by the Rev. C. F. Thornewill in flood rubbish near Burton-on-Trent, and given 
by him to me soon after I vegan collecting ; it is now in the collection of Mr. P. B. 
Mason, of Burton-on-Trent. According to Weise this species occurs on Potamogeton 
lucens and pectinatus aud Myriophyllum spicatum in May and June. 
CRIOCERINA. 
This tribe contains a few genera and a very large number of species, 
which may be known by having the antenne distant at base and the 
first segment of the abdomen short; the antenne are comparatively 
short and stout, and the eyes are prominent and more or less emarginate ; 
the thorax is plainly narrower than the elytra, which are usually oblong 
and subparallel, and have the shoulders well marked; the first ventral 
segment, as a rule, is scarcely longer than second, but is somewhat 
longer in Zeugophora than in our other genera; the last-mentioned 
genus is in some respects intermediate, and is classed by Thomson with 
the Orsodacnide or Sagrina. 
