tarsi are 4-jointed, and Tritom a at a remote station amongst 
the Anisotomidae. Triplax like Tritoma has distinctly penta- 
merous tarsi, although the 4th joint is small ; and according 
to the view I took at fol. 498 of types of form, both genera 
would associate with the Chrysomelidae; but until the Engidae 
and neighbouring groups are fully investigated, I shall re- 
frain from offering any further remarks as to the location of 
this difficult tribe. 
The following are British species of Triplax. 
1. aenea Fab . — Curt. Brit . Ent.,pl. 706. 
Very smooth and shining; orange-ochre; antennae piceous, 
eyes black : head and thorax sparingly and irregularly, but 
strongly punctured, the latter margined at the base ; elytra 
bright deep blue with a slight green tinge, with closely punc- 
tured striae and minute punctures on the interstices. 
On the trunk of a Holly tree in the New Forest the begin- 
ning of June, J. C. ; on decayed willows and in fungi in abund- 
ance at Ockbrook, the Rev. L. Hey. 
2. rufipes Fab. Panz . 13. 17. 
Black, head thorax and legs orange-ochre, antennae ochre- 
ous, club piceous, head thorax and elytra rather thickly punc- 
tured, the latter with punctured striae also : length 1 J line. 
Coomb-wood, on dead trees, in August. 
3. bicolor Mars . Ahr. 12. 16. 
Oblong, rufous, entirely rufous beneath ; elytra black ; an- 
tennae piceous, rufous at the base : length 2 lines. 
Coomb- wood in June, and Cambridgeshire. 
4. ruficollis Dej. P Step. III. pi. 11. f. 6. 
66 Black, thorax and legs rufous, antennae rusty-castaneous : 
2j lines.’ , 
Taken once near Windsor. 
5. russica Linn . — nigripennis Fab. Panz . 50, 7. — S. castanea 
Marsh., with a yellow head and thorax and castaneous ely- 
tra, is according to Stephens a small immature var. 
Orange-ochre : eyes black ; postpectus blue-black ; scutel 
and elytra inky black, antennae piceous ; head and thorax 
with strong scattered punctures ; elytra with faintly punctured 
striae, the interstices minutely punctured : length 2J. 
Several in boleti at the foot of an ash- tree at Ditchingham 
in Norfolk, in April ; on the trunk of a tree in the New Forest 
in June, and under bark in winter. 
The plant is Caress divisa , Bracteate Marsh Carex, from 
Ryde, communicated by Dr. Brom field. 
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