On Aquatic Carnivorous Coleoptera, or Dytiscidce. 



315 



very positively as to its structure. I am by no means sure that this is really the 

 species Motschoulsky intended to describe as L. basalis. 



Malacca. 586. 



169. Laccophilus chinensis, Boh., M.C. — Ovalis, subdepressus, sat latus, perni- 

 tidus, rufo-testaceus, elytris fere tequaliter fusco-irroratis, fascia sub-basali con- 

 spicua pallida. Long. Si, lat. 2 m.m. 



In this species the fuscous marks on the elytra can scarcely be traced as beino- 

 flexuous lines, but appear to be small sinuous dark marks, separated by yellow- 

 ones of about the same size : the sides, however, and a conspicuous fascia near the 

 base are yellow. The male has the front and middle tarsi but little dilated ; its 

 apical ventral segment has the hind margin a good deal oblique on each side but 

 very little sinuate ; in the female it is still less truncate on each side, but yet 

 scarcely sinuous. 



China. 587. 



170. Laccophilus restrictus, n. sp. — Ovalis, subdepressus, nitidus, testaceo-rufus, 

 elytris fere fequaliter fusco-irroratis ; prothorace valde transverso. LontJ-. 3| lat. 

 2 m.m. 



The sexes in this species are not very easy to distinguish : the male has the 

 front and middle tarsi but little incrassate, and the apical ventral segment has the 

 hind margin acuminate in the middle and very oblique at the sides ; in the female 

 the middle part is scarcely longer than in the male, but it forms a broader lobe 

 rounded at the extremity, and the hind margin close to the sides is more deeply 

 sinuate. This species has the outline less narrowed in front than is usual in the 

 genus. 



Egypt. 588. 



171. Laccophilus solutus, n. sp. — Ovalis, subdepressus, nitidus, testaceo-rufus, 

 elytris lineis tenuissimis, flexuosis et disintegratis, fuscis. Long. 4, lat. 2\ m.m. 



The dark marks on the elytra are fine, linear, and very irregular, and more or 

 less broken up into short pieces, they leave the sides untouched, and become 

 obsolete at the extremity. In the male the front and middle tarsi are moderately 

 incrassate ; the apical ventral segment is produced in the middle and sinuate at 

 each side of the hind margin, so as to form a small prominent middle lobe : in 

 the female the hind margin is broadly rounded, being not much produced in the 

 middle. 



China. 589. 



TBANS. KOT. DUB. SOC , N.S. VOL. n. 8 X 



