312 On Aquatic Carnirorovs Coleoptera or Dijtiscidce. 



160. Laccophilus pcarvulus. Aube. M.C. — Ovalis, minus convexus, nitidus, 

 testaceus, elytris disco lineis undulatis valde abbreviatis suturaque fuscis, abdomine 

 obscuro. Long. SA, lat. 2 ni.m. 



This is a small species, comparatively little narrowed in front, and with the dark 

 marks on the elytra reduced to some (about five) very short flexuous lines on the 

 middle, so that they leave a considerable space at the base, and all the apical half 

 immaculate, the suture however is dark for the greater part of its length ; and in 

 some specimens these marks take a much greater development, so that there may 

 be a subapical patch of small marks, and also some small irregular marks close to 

 the base, the central batch of marks still remaining more or less distinct from the 

 smaller basal and apical ones. In the male the front and middle tarsi are 

 moderately incrassate and the apical ventral segment is a good deal produced in 

 the middle and sinuate on each side ; in the female the apical portion of the 

 segments forms a broader and more prominent lobe in the middle than it does in 

 the male, and is a little more distinctly sinuate close to the outer angle. 



I am by no means sure that this is really the species described by Aube as L. 

 parvulus. 



Sumatra. G21. 



161. Laccoj^hilus, dispersus, n. sp. — Ovalis, sat latus, brevis, nitidus, testaceus ; 

 elytris lineis flexuosis ante basin late desinentibus, ultra medium interruptis fuscis. 

 Long. 3, lat. If m.m. 



This species is again closely allied to L. derasus, but is considerably smaller and 

 less elongate ; the marks on the elytra are well defined, but similar to those of 

 L. derasus. I have seen but a single male ; it has the front and middle tarsi 

 distinctly incrassate, and the apical ventral segment is a good deal produced in the 

 middle, and sinuate on each side. 



Siam, Bangkok. 583. 



162. Laccophilus undulifer, Motsch. M.C. — Ovalis, minus convexus, nitidus, 

 testaceus, elytris lineis duplicatis undulatis, minus abbreviatis fuscis, lateribus 

 immaculatis ; corpore subtus leviter infuscato. Long. 3i m.m. lat. 1| m.m. 



In this species the lines of the elytra consist of distinct pairs, and nearly attain 

 the base and the apex, the sutural one being however more abbreviate in front 

 than the others ; these lines are quite wanting at the sides. I have seen only one 

 individual in very bad condition ; it is a female, and has the a^jical ventral segment 

 forming a very broad and very short projection in the middle, so as to be slightly 

 sinuate on each side, but the outer angles do not appear to be projectino-. 



Madras, (Wehncke). 622. 



