HALIPLID^E. DYTISCID^E. 09 



XXXV. Genus LACCOPHILUS. Leach. 



(99) 1. * Laccophilus biguttatus. Two-spotted Laccophilus. 



L. (biguttatus) niger ; capite, prothorace, pedibusque, pallide flavis ; ehjtris fusco-cinereis yutta marginali obscura flava. 

 Two-spotted Laccophilus, black; head, prothorax, and legs, pale yellow; elytra cinereous-embrowned, with an obscure 

 yellow marginal spot. 



Length of the body 2 lines. 



One specimen only taken. 



DESCRIPTION. 



Body very smooth, glossy. Head dirty yellow ; palpi and antenna dusky at the tip ; manitrunk 1 

 dirty yellow; elytra embrowned-cinereous, with a line of punctures, as in the other species, adjacent 

 to the suture, and a pale yellow, indistinct, oblong, anterior, marginal spot : legs dirty yellow, pos- 

 terior tarsi dusky; alitrunk and abdomen nigro-piceous ; apex of the segments of the latter reddish- 

 yellow. 



This species is smaller than L. minutus, which it resembles, and the colour of the elytra and 

 underside of the body differs. 



Family DYTISCIDiE. Dytiscidans. 



XXXVI. Genus COLYMBETES. Clair. 



(100) 1. * Colymbetes semipunctatus. Semipunctured Colymbetes. 



C. (semipunctatus) ater, nitidus; ore, antennis, tarsisque quatuor anterioribus, ferrugineis ; elytris disco seriatim, latere sparse, 



punctatis. 

 Semipunctured Colymbetes, very black, glossy ; mouth, antenna?, and four anterior tarsi, ferruginous ; elytra punctured in 



lines on the disk, on the sides without order. 



Length of the body 3| lines. 



One specimen only taken. 



DESCRIPTION. 



Body oblong, glossy, very black; above very slightly bronzed; under a powerful magnifier the 

 whole upper surface is most minutely reticulated, and the under covered, with longitudinal scratches. 

 Head with a pair of vertical red crescents placed transversely, and scarcely visible except when the 

 sun shines ; upper-lip, palpi, and antenna? ferruginous ; mandibles black ; prothorax anteriorly with 

 a continuous transverse marginal series of punctures, posteriorly with one widely interrupted in the 

 middle ; and in the disk with a minute furrow : elytra with a triple dorsal series of punctures not 

 regularly or singly arranged, with other scattered punctures interjacent especially towards the apex, 

 on the side the punctures, which are not numerous, are scattered without order; in the sutural 

 series the punctures are distant and single; beyond the middle of each elytrum not far from the 

 lateral margin is a red streak, not distinctly visible except in a strong light : the arms are piceous, 

 and the four anterior tarsi ferruginous. 



1 The manitrunk is that part of the trunk that bears the arms or fore-legs. It includes the prothorax and an tepee tus. 



