232 LONGICORNIA. — [Rhagium. 
that it supported in its jaws 547 times its own weight ; this is in the 
same proportion as if a man of 11 stone were to support 373 tons, a 
fact that shows clearly the enormous strength not only of the jaws, but 
also of the neck and other muscles of the beetle.” 
R. indagator, Gyll. (inguisitor, L., Thoms., H. R. W., nec F. and 
Brit. Cat.; investigator, Muls.). Smaller on the average than the pre- 
ceding, and easily distinguished, apart from other differences, by having 
the raised lines on the elytra continued almost to base, and the head 
narrowed behind eyes; the upper surface is clothed with somewhat 
mottled greyish pubescence, the disc of the elytra being furnished with 
more or less distinct and reticulate smooth black markings, and with 
two more or less distinct black fasciz, one before and the other behind 
middle; the thorax has the anterior margin dull ferruginous, aud a 
somewhat smooth central line; the legs are black, with the femora and 
tibiee strongly pubescent. L, 12-16 mm. 
In the male the fifth ventral segment is truncate at apex, in the 
female it is rounded and produced. 
In birch, fir, &c.; very rare in England; Shropshire (Stephens); Hainault 
Forest (Power); Repton ((iarneys) ; I believe, however, that the two latter localities 
are probably in error, through wrong numbering or some other cause; Scotland, 
locally common, Solway (?), Tay, Dee, and Moray districts. 
R. bifasciatum, F. (bicolor, Ol.; unifaseiatum, Muls.). More 
shining than the two preceding species, and with longer antenne ; 
colour black with the elytra more or less reddish at sides and shoulders, 
and with two very distinct ollique testaceous fasciz on each, which in 
certain not uncommon varieties are much enlarged and confluent, the 
testaceous colour covering a great part of the elytra ; very rarely they 
are absent ; pubescence fine and scanty ; head scarcely narrowed behind 
eyes ; antenn ferruginous ; thorax with very strong lateral spines, and 
with a smooth central longitudinal line; elytra with well-marked 
shoulders, somewhat narrowed to apex, coarsely and rugosely punctured, 
with raised lines which are more distinct behind, but are more or less 
plainly continued to base ; legs black, with tarsi, femora, and tibie all 
more or less rufous. L. 14-20 mm. 
In decaying fir stumps, &c. ; somewhat local, but generally distributed throughout 
the greater part of England and Wales ; Scotland, common in fir wood, Solway, 
Tweed, Forth, Clyde, Tay, Dee, and Moray districts ; Ireland, Powerscourt (Dublin), 
Neweastle, co. Down, and probably widely distributed. 
TOXOTUS, Serville. 
This genus contains about thirty species, which are chiefly found 
in Europe, Northern Asia, and North America; one has been described 
from Madagasear, but this is the only one that has oecurred within 
tropical limits; of the five European species one only is found in 
