DESCRIPTIONS OF NEW MALAYAN AND ONE 

 BORNEAN SPECIES OF PHYTOPHAGOUS 



COLEOPTERA 



By M. JACOBY, F.E.S. 



{ TN the absence of Mr. Robinson and myself in Selangor and Calcutta, 

 A respectively, Professor Poulton has kindly superintended the publication 

 of these diagnoses. Mr. Jacoby's full paper on the Phytophaga collected 

 will be published later, with the collectors' field notes.' — N.A., Indian Museum, 

 Calcutta. 



Melixanthus siamensis, sp. nov. 

 Black, thorax impunctate, elytra finely punctate-striate, black, a sinuate transverse band at 

 the base, and a round spot near the apex, bright flavous. 

 Var. Abdomen partly fulvous. 

 Length, z\ mm. 



Short and broad, the head rather strongly and closely punctured, antennae black, with the 

 apical six joints strongly dilated, the lower three joints flavous, thorax strongly convex, 

 widened at the middle, black, very shining, the lateral margins feebly rounded, posterior angles 

 acute, produced, medial lobe biemarginate, with a short transverse depression, the surface 

 impunctate, scutellum black, trigonate, elytra very finely punctate-striate, the punctures nearly 

 absent below the middle, the interstices, with a row of still finer punctures here and there, the 

 black ground colour divided by a bright yellow transverse band at the base, which does not 

 extend to the suture, and is strongly constricted at the middle, another round yellow spot of 

 rather large size is placed near the apex, under side and legs black, abdomen (in one specimen) 

 as well as the pygidium fulvous ; prosternum about as long as broad, widened posteriorly, the 

 basal margin straight. 



Habitat. Biserat, Jalor, Siamese Malay States. 

 Separated by the black thorax, and the design of the elytra from its congeners. 



Colaspoides annandalei, sp. nov. 

 Fulvous, the apical joints of the antennae, the breast and the legs black, thorax strongly 

 punctured, elytra closely punctate-striate, not depressed below the base, abdomen fulvous. 

 Length, 5-5^ mm. 



