1887.] 



COLLECTION FROM CHRISTMAS ISLAND. 



521 



surface uneven, but not concave as in C. auroplagiata ; the punc- 

 tures rather large, but fine near the coxae. The smooth lateral 

 caruia (extending from the posterior angle to near the front angle) 

 straighter than in most of the allied species. Prosternal process 

 chanelled and coarsely punctured. Abdomen densely and finely 

 punctured, except at the posterior margins of the segments. The 

 kst segment with a narrow, elongate, triangular notch at the apex. 

 The upper and apical parts of the femora, the posterior edge of the 

 tibiae, and the tarsi coppery. 



PlEZONOTUS DISCOIDALIS, Sp. n. 



Niger, depressus, viridi-squamosus ; thoracis disco elytrorumque 

 sutura cu/vis. 



Long. II, lat. 6 millim. 



Apex of the rostrum about one quarter broader than the length 

 of the rostrum itself, narrowed at the base, flat above, with a trace 

 of a short ridge in the middle at the apex; forehead with an im- 

 pressed hue between the eyes. Thorax as long as broad, gently 

 convex, a httle more narrowed in front than at the base, moderately 

 rounded at the sides. The disk with closely placed, round, shining 

 granules, each granule marked with a puncture. The sides clothed 

 with light green scales. Elytra one-fifth longer than broad, rather 

 flat, gradually declivous at the apex ; at the base not broader than 

 the base of the thorax ; evenly rounded at the sides, with no distinct 



Piezonotus discoidalis. 



shoulders ; punctate-striate ; the interstices with numerous (but not 

 very closely placed) round shining granules; all the interspaces 

 (except on the smooth suture) clothed with light green scales, with 

 a few coppery scales interspersed. Underside (except the apex of 

 the abdomen) and the legs clothed with pale green scales, intermixed 

 with pale pubescence, which on the legs is rather long. 



The discovery of a fourth species of this genus of CurculionidcB is 

 of some interest, the three species previously known having been 

 described from Java, Amboyna, and Punipet. 



