LIPAROCHRUS DERASUS. 195 



the middle; the hind margin of the head armed with a 

 small toothlike tubercle in the middle The thorax rather 

 densely punctuated, the punctures however rather shallow, 

 slightly truncated anteriorly , with a slight triangular exca- 

 vation just behind the small cephalic horn , the sides re- 

 gularly rounded , the base not margined , carrying opposite 

 to the scutellum a small although very distinct tooth , from 

 which a longitudinal dorsal groove extends which disappears 

 towards the middle. Elytra regularly oval , rather deeply 

 striated , the striae groove-shaped , slightly indented dor- 

 sally , the interstices distinctly convex , smooth. Pygidium 

 shining, rather densely punctuated. The metasternal plate 

 smooth. The posterior metatarsus with a single obtuse 

 tooth at its exterior border. The apical spur of the an- 

 terior tibiae not bent inward , obtusely rounded at the apex. 

 (Male). 



Only a single specimen of this new species , captured in 

 November 1877 at Moeara Laboe, has been brought home 

 by the Sumatra-Expedition. The species seems to be very 

 well characterised by the small pointed tubercle placed in 

 the middle of the hind margin of the head in the male 

 sex, as well as by its smooth and shining black surface. 

 I do not know any other species with which it might pos- 

 sibly be confounded. 



3. Liparochrus der a sus, sp. n. 



Modice convexus, piceus, capite thoraceque dense for- 

 titer punctatis , elytris striis fere 20 punctorum majorura , 

 dorso autem medio post scutellum laevigatis , apice singu- 

 latim truncatis , angulo suturali ipso breviter denticulato. — 

 Long. 8 mm. 



Of a brownish black on the upper surface ; the legs , the 

 more or less transparent apex of the elytra and the under 

 surface of the body of a reddish brown; the antennae 

 ferrugineous. Head strongly punctuated , the clypeus of 

 an obtusely rounded oval shape , the mandibles semicircular 



I'J'otesi from the Leyden iMiiseiim, Vol. II. 



