On Aquatic Carnivorous Coleoptera or Dytiscide. 299 
The marks of the elytra in this specieg are distinct and complicated, but vary 
somewhat ; the basal portion of the elytra is pale, but has a dark spot near the shoulder 
and another near the suture, the pale basal portion is very irregular in form, and 
the dark spots in it are more or less connected by prolongations with the medial 
dark marks, at the middle of the side the dark part is encroached on by a pale spot, 
and there is a very irregular more or less interrupted pale fascia beyond the middle, 
and the apex itself is pale. The margins of the dark portions are darker than their 
centres, the colour there being more dilute. The male has the front and middle tarsi 
rather distinctly incrassate, but has no coxal file. In each sex the apical segment 
is without sinuation at the sides. 
North America, Pennsylvania; Amazons Valley: but there is doubt whether this latter locality be 
correct. 555. 
124. Laccophilus obesus, n. sp.—Ovalis, latiusculus, sat convexus, pernitidus, 
supra creberrime sub-obsolete punctulatus, castaneus, capite thoraceque rufo-testa- 
ceis, hoc anterius medio obscuriore, elytris signaturis apiceque pallidis. Long. 4, lat. 
22 m.m. 
The pale marks of the elytra consist of some large basal spots which form a 
transverse fascia, of a spot on the middle of the lateral margin, of a larger transverse 
mark between this and the apex, and the apex also is pale. The only individual I 
have seen is no doubt a male,though it possesses only very slight external distinctions,. 
its front tarsi, and the apical ventral segment being nearly simple, though there 
is an excessively slight sinuation on each side of the middle of the latter. In the 
collection of the Brussels Museum there exists however a female from Minas Geraes. 
which is either a variety of this species or a very closely allied one ; it has the 
apical ventral segment more elongate and without the least sinuation, and the 
epipleural fold shows a depression for some distance before the apex. 
South America, Cayenne. 544. 
125. Laccophilus latipes, n. sp.—Ovalis, sat convexus, pernitidus, supra obso~ 
letissime punctulatus, piceus, antennis, pedibus anterioribus, capite, prothoracis 
lateribus elytrisque signaturis conspicuis apiceque testaceis. Long. 4, lat. 2 m.m. 
The species is closely allied to the preceding, but is darker in colour, with the 
upper surface less visibly punctulate, and the markings of the elytra (which are 
however quite the same in their distribution) very conspicuous. The pale colour 
at the sides of the thorax extends in a very indistinct manner across the middle. 
T have seen only two individuals, which are males, and show quite the same 
characters as L. obesus. 
South America, Parana. 545, 
TRANS. ROY. DUB. SOC., N.S, VOL, I. 2R 
