On Aquatic Carnvorous Coleoptera or Dytiscide. 305 
141. Laccophilus sublineatus, n. sp.mOvalis, convexus, subtilius reticulatus, 
nitidus, ferrugineus, fere unicolor, elytris dorso lincis fuscis, abbreviatis, rectis, egre 
discernendis, stria suturali punctorum sat conspicua; prothorace basi in medio 
perparum elongato. Long. 4, lat. 2} m.m. 
The convex form and obscure colour give this some resemblance to Laccophilus 
luridus, but it is not half the size, and the base of the thorax is less prolonged in 
the middle than it is in that species ; the lines of darker colour on the elytra are so 
obscure that they are more easily overlooked than detected. I do not know the 
male; the female has the apical ventral segment obliquely sinuate on each side the 
middle, the middle of the hind margin being obtusely pointed. 
Arabia, (El Hedjaz) ; Mesopotamia: found by Dr. Millingen. 1174. 
142. Laccophilus pictipennis, n. sp.—Ovalis, sat latus et convexus, nitidus, rufo- 
testaceus, prothorace anterlus in medio elytrisque fuscis, his argute testaceo- 
maculatis. Long. 43, lat. 23 m.m. 
The yellow marks on the elytra are large and distinct in this species, and consist 
of a large humeral mark extending inwards and nearly joining a sutural spot, a 
mark on the side about the middle, and a very waved sub-apical band of nearly 
united spots, there is also a yellow mark at the apex, but the suture and extreme 
apex are fuscous ; there is also a longitudinal vitta extending backwards from the 
anterior sutural. spot. The species is just about the size of Dytiscus interruptus, 
(No. 128), but is more rounded at the sides, and the markings of the elytra are 
much more conspicuous. In the male there is scarcely any incrassation of the 
tarsi, but the apical ventral segment is largely truncate, and is emarginate on each 
side, the two emarginations being not quite similar, the one on the right side being 
rather deeper than the one on the left side. In the female the apical ventral 
segment is not truncate, and is scarcely sinuate on each side. 
Arabia and Abyssinia, (El Hedjaz, Dr. Millingen). 566. 
143. Laccophilus discretus, n. sp.—Rotundato-ovalis, convexus, nitidus, fusco- 
ferrugineus, elytris obsolete testaceo-maculatis, antennis testaceis, pedibus rufis ; 
elytris stria suturali plus minusve conspicua. Long. 43, lat. 23 m.m. 
This species is of an infuscate reddish hue, with obsolete yellow marks on the 
elytra, these consist of an interrupted irregular basal band, very large at the 
shoulder, and of a second interrupted irregular band behind the middle, the apex 
itself is also more or less indistinctly pale, there is generally also a very indistinct 
narrow longitudinal stripe near the suture and connecting the two transverse 
bands. The sutural impressed stria seems always to be present though sometimes 
very indistinct; it appears as if formed by numerous approximate punctures. 
The male has the last ventral segment much truncate, and very slightly emarginate 
