On Aquatic Carnivorous Coleoptera or Dytiscida. 305 



141. Laccophilus sublineatus, n. sp. — Ovalis, convexus, subtilius reticulatus, 

 nitidus, ferrugineus, fere unicolor, elytris dorso lineis fuscis, abbreviatis, rectis, tegre 

 discernendis, stria suturali punctorum sat conspicua; prothorace basi in medio 

 perparum elongate. 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 dai-ker colour on the elytra are so 

 obscure that they are more easily overlooked than detected. I do not know the 

 naale ; the female has the apical ventral segment obliquely sinuate on each side the 

 middle, the middle of the hind margin being obtusely pointed. 



Ai-abia, (El Hedjaz) ; Mesopotamia : found by Dr. Millingen. 1174. 



142. Laccophilus pictipennis, n. sp. — Ovalis, sat latus et convexus, nitidus, rufo- 

 testaceus, prothorace anterius in medio elytrisque fuscis, his orgute testaceo- 

 maculatis. Long. 4?, lat. 2i 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 

 nmch 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). 5G6. 



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. 42, lat. 21 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 indistmct 

 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 



