114 - Mr. G. Lewis on 
Ichthyurus atriceps, sp. n. 
Niger, subnitidus ; thorace marginibus anguste, elytris marginibus 
externis antennisque basi flavis. 
9. L. 6 mill. 
Black, somewhat shining, pubescent; the head black, 
except narrowly round the bases of the antenna, obscurely 
punctulate and very feebly rugose; the thorax similarly 
sculptured, with the rim yellow; the scutellum black; the 
elytra black, with the sides from the shoulder narrowly yellow, 
apices broadly yellow, with the rims conspicuous, elevated, 
more distinctly sculptured than the thorax; the abdominal 
segments are laterally yellow; the legs, anterior and inter- 
mediate pairs obscurely brown and infuscate in parts, hinder 
pair blackish ; the antenne, three basal joints brownish and 
the others black. 
This species is larger and much more robust than J. néponi- 
cus, Lew., and is very different in colour. In J. niponicus 
the elytra are yellow along the bases in the male, but not in 
the female, and in the latter sex the yellow part of the head 
is confined to the region of the antenne and the thighs are not 
enlarged. 
Hab, Wada-togé, lst August, 1881. 
Biurus pennatus, sp. un. 
Niger, nitidus; antennis articulis duobus primis flavescentibus ; 
elytris valde dehiscentibus, apice late flavis; pedibus pallide flavis 
vel tenuiter infuscatis. 
L. 53-5? mill. 
Black, shining, with griseous pubescence on the head and 
elytra; the head uneven, without punctuation; the thorax 
with ill-defined raised spaces, but without carine or tubercles ; 
the scutellum rather deeply incised posteriorly ; the elytra 
apically and about one third of the wing-case yellow; the abdo- 
men infuscate, with the margins of the segments (except the 
last) testaceous ; the last segment is incised, the incision being 
nearly semicircular in outline; the legs are pale yellow or 
slightly intuscate, varying much in various examples; the 
antenne are dusky, with the two basal joints pale, and some- 
times the third. In this genus, and also in Jchthyurus, there 
is a curious polished tubercle attached to the bases of the 
elytra, and in the male the eyes are very large and the space 
between them narrow. 
I have no doubt about this insect being congeneric with 
Brurus sylvicola and sublateralis, Motsch.; but whether it is 
