Ischnodes. | SERRICORNIA. 93 
I. sanguinicollis, Panz. Elongate, narrowed in front and behind, 
clothed with blackish pubescence, colour shining black with the thorax 
bright red; head coarsely punctured, antenne rather long, black or 
pitchy, strongly serrate; thorax gradually narrowed from base to apex, 
much narrower in front than at base, finely and not closely punctured, 
posterior angles sharply projecting and finely carinate ; scutellum large, 
closely punctured ; elytra gradually narrowed from base to apex, with 
distinet punctured striz, interstices rather thickly and coarsely punc- 
tured, somewhat rugose ; legs black or fuscous, tarsi often reddish.  L. 
5-9 mm. 
In rotten elm, oak, maple, &c.; very local and, as a rule, rare, but it has occa- 
sionally been found in numbers; Blackheath (West); Sheerness ; Esher (Power) in 
black fungus on old elm; Stockwell, Surrey; Greenwich ; banks of the Isis near 
Oxford, in rotten wood, and Sutton (Surrey) flying (Rev. A. Matthews); Stephens 
records it from Kensington Gardens, Copenhagen Fields, Southend, Norfolk, and 
Windsor. 
MEGAPENTHES, Kiesenwetter. 
Both this and the preceding genus are distinguished from Elater by 
not having the prosternal sutures excavate in front; from Isehnodes 
the present genus may be at once known by having the second and third 
joints of the antennz very small and of about equal size, and the thorax 
more parallel-sided ; the genus contains about forty species, which are 
very widely distributed, but oceur chiefly in tropical countries ; four 
of these inhabit Europe, of which two are found very rarely in Britain ; 
these may be distinguished as follows :— 
I, Upper surface dull; thorax shagreened between punc- 
KES -¢ og G6 Gol or SIS le 6 6 se 6 ih ienin ale 
II. Upper surface shining; thorax rather diffusely punctured 
on disc, more closely at sides, not shagreened between 
UNO 6 bb og ee oe eo 0 Gg oo 6 og WM MOON, Moe 
M.lugens, Redt. (Eetinus aterrimus, Curt., nec L., Steph., &e. ; 
Ampedus anthracinus, Dej.). Elongate, gradually narrowed towards 
apex, deep black, very dull, clothed with thin greyish pubescence ; 
head closely punctured, antenne in both sexes longer than the head and 
thorax ; thorax considerably longer than broad, with sides subparallel, 
but gradually rounded and narrowed in front, posterior angles sharp and 
projecting, very strongly carinate, upper surface covered with small fine 
and shallow setigerous umbilicate punctures, interspaces shagreened and 
dull; scutellum rather large, pointed at apex, thickly punctured; elytra 
not quite as broad as thorax with the sides straight gradually narrowed 
to apex, with distinct coarsely punctured striz, interstices rather strongly 
punctured; legs pitchy black or pitehy brown, with the tarsi and knees 
often reddish. LL. 8-10 mm. 
Male with the antenne more strongly serrate than in female, 
