162 SERRICORNIA. [ Dasytes. 
trochanters and the base of the posterior tarsi testaceous, the latter often 
very obscurely so ; the thorax is shining on disc and has no trace of a 
central furrow, and the fourth joint of the tarsi is much shorter and 
narrower than third ; the elytra are somewhat roughly punctured; in the 
male the head is broader than in the female and the antenne are longer, 
and the fifth ventral segment of the abdomen is deeply impressed and 
broadly emarginate at apex ; in the female the fifth joint of the antenne 
is a little larger than those on each side of it, and joints 7-10 are oblong 
triangular. L. 4-4} mm. 
By sweeping herbage and beating hedges, in lanes, woods, &c.; rather common 
and widely distributed in the London, Southern, and Midland districts, and also in 
Wales; less common further north; Northumberland and Durham district, rare ; 
Scotland, very rare, Solway district, and recorded doubtfully from the Forth 
district. Mr. Chappell informs me that he has bred it from oak galls from 
Llangollen. 
D. niger, L. Less elongate, and of shorter and broader form than 
any of the preceding, black, shining, clothed with rather thick and short 
outstanding black pilose hairs ; head broader in male than in female, and 
with the antenne longer; in the former sex, however, they only reach a 
little beyond the base of the thorax; thorax very slightly transverse, a 
little narrowed in front, especially in the female, broadest behind middle, 
with the disc more or less thickly punctured, and the sides closely rugose, 
with a more or less distinct impressed central line in front ; elytra rather 
closely and finely punctured ; legs black, tarsi elongate. L. 33-4mm. 
Male with the fifth ventral segment of abdomen moderately, and the 
sixth rather strongly impressed. 
By sweeping in grassy places; very local and not common; New Forest (where 
it has been taken by Mr. Champion, myself, and others) ; the species was introduced 
into our list in 1871 on the authority of Mr. Champion’s specimens, but a single 
specimen was captured by Dr. Power so long ago as July 21, 1855, at the Holt, 
near Farnham. 
PSILOTHRIX, Redtenbacher. 
This and the succeeding genus contain a few species which are chiefly 
found in the European region ; two or three, however, occur in North 
America; the species belonging to this genus differ from Dolichosoma in 
their somewhat thickened tarsi, shorter and stouter antennz, somewhat 
broader form and pubescent upper surface. 
P. nobilis, Ill. (viridis, Rossi). Of a very bright green or greenish- 
blue colour, sometimes quite blue, rather shining, elongate and parallel- 
sided, with elytra somewhat depressed, with sparing pubescence and long 
erect black hairs; head large, thickly and coarsely rugosely-punctate, 
antenne short, metallic green, feebly serrate; thorax about as long as 
broad, with the sides rounded, thickly and rugosely punctured, with a 
more or less distinct smooth central line or furrow; elytra rather broader 
