On Aquatic Carnivorous Coleoptera or Dytiscide. 307 
lines are interrupted beyond the middle (except the one next the suture), and where 
they reappear beyond the interruption, are more irregular and mixed together, and 
do not extend quite to the apex. The male has the front and middle tarsi a little 
incrassate ; the apical ventral segment is abbreviate, and its hind margin nearly 
straight, being scarcely produced in the middle and not at all at the sides. In the 
female it is a good deal longer in the middle than it is at the sides, so as to form a 
sort of indistinct middle lobe, but the lateral parts are not at all produced. 
Abyssinia. 569. 
147. Laccophilus brevicollis, n. sp.—Ovalis, sat convexus, nitidus, testaceus, pro- 
thorace anterius et posterius in medio, elytrisque sutura et lineis latis haud 
undulatis fere confluentibus, ante basin et ultra medium plus minusve interruptis, 
nigris. Long. 4, lat. 23 m.m. 
This species is very similar to Laccophilus grammicus, but is smaller and the 
dark marks on the thorax and elytra have a greater extension. The male is 
unknown to me; the female has the apical ventral segment elongate in the middle, 
but not forming a lobe, the sides forming very nearly a simple curve. 
Cape of Good Hope. 570. 
148. Laccophilus lateralis, n. sp.—Ovalis, sat convexus, minus nitidus, rufo-testa- 
ceus, prothorace anterius et posterius infuscato, elytris nigro-suffusis, lateribus 
sionaturisque paululum conspicuis testaccis; abdomine pectoreque nigro-suffusis. 
Long. 4, lat. 25 m.m. 
In this species the dark marks of the elytra are confluent so as to render the wing 
cases nearly entirely dark except at the sides ; in some specimens there are traces 
of longitudinal pale marks. The male has the front and middle tarsi much 
incrassate, and the apical ventral segment truncate but distinctly simuate on each 
side, the lateral angles projecting almost farther backwards than the middle part; 
in the female the hind margin of the last ventral segment forms a slender, but 
rather elongate lobe in the middle, and the lateral angles are about similar to those 
of the male. 
Madagascar. 572. 
149. Laccophilus luctuosus, n. sp.—Ovalis, convexus, nitidus, testaceus, pro- 
thorace anterius et posterius in medio infuscato, elytris fuscis, fascia sub-basali ad 
suturam anguste interrupta testacea; pectore nigricaute, abdomine fusco. Long. 
¥, lat. 2 m.m. 
A small and comparatively convex species; the fuscous colour with which the 
TRANS. ROY. DUB. SOC., N.S., VOL. II. 2S. 
