StophylinidcB of Japan. 99 



side near tlic front. Thorax very transverse, quite twice 

 as broad as long, obliquely impressed near the hind angles, 

 alutaceous and dull, finely and sparingly punctured. Scu- 

 tellura black. Elytra more than twice as long as the 

 thorax, finely but distinctly and closely punctured, of a 

 shining-yelloAvish colour. Hind body and breast black. 



The male is smaller than the female, and has the meta- 

 sternum foveolatcd in the middle at the extremity. 



Found in the flowers of early spring at Nagasaki. 



185. Megarthrus japonicus, n. sp. Nigricans, leviter 

 nitididus, antennaruin articulo primo pedibusque sordide 

 rufis, thorace ad angulos posteriores exciso. Long. 1^ 

 lin. 



This species resembles M. denticoUis, but is darker in 

 colour, and the structure of the legs in the male is very 

 different. The antennas are black, with the basal joint of 

 an obscure red colour. The head is dull black, even, only 

 a little depressed on each side near the eyes. The thorax 

 is rounded at the sides near the front angles, Avithout tooth 

 at the sides ; the hinder angles abruptly excised in a similar 

 style to that oi denticoUis ; the sides are sometimes reddish 

 near the hind angles, sometimes entirely black. The elytra 

 are broad, much dilated from the base to the extremity, 

 densely pmicturcd. The legs are dirty red. In the male 

 the four hinder femora are slightly thickened, the middle 

 tibite are simple, but their loAver portion is furnished on 

 the inside with a very short and dense black pubescence 

 (not to be perceived Avithout a careful examination) ; the 

 hind tibife are slender, slightly excavate on the inside 

 beloAv the middle. 



Abundant. 



186. Megartlirus paraUelus,\^.'S\). Piceus, prothoracis 

 lateribus pedibusque rufis, leviter nitidus ; elytris trans- 

 versim convexis, fortiter punctatis. Long 1 — \\ lin. 



A rather narrow^ and parallel species, with the elytra 

 convex, and very coarsely punctured. Antenna} rather 

 long and slender, pitchy, the basal joint rather darker than 

 the 2nd. Head distinctly impressed on each side near 

 the eyes, the front margin strongly elevated. Thorax 

 pitchy in the middle, the sides broadly red ; it is veiy little 

 rounded at the sides, and but slightly narrow^ed in front ; 

 it presents on each side distinct traces of three teeth, one 



II 2 



