6 Phytophaga Malay ana. 



Eobust, ovate, resembling S. quadraticollis in form, but rather 

 shorter and thicker than that insect, bright metallic green, with 

 metallic blue reflexions, subnitidous, outer half of antenna; black, 

 opake. Head finely punctured; antennae robust, two-thirds the 

 length of the body, six basal joints shining metallic green. Thorax 

 subquadrate, almost transverse across the anterior angles, the 

 latter moderately prominent, anterior margin very slightly pro- 

 duced ; upper surface subopake, impressed near the basal margin 

 with a shallow fovea ; sparingly covered near the base by a few 

 very minute punctures, only visible under a lens. Scutellum semi- 

 ovate, its base deeply excavated. Elytra shorter, ovate, truncate 

 at the base, their apex subacutely rounded ; above very convex, 

 moderately impressed within the shoulders, the latter somewhat 

 prominent ; basilar space indistinctly elevated, bounded beneath 

 by a nearly obsolete transverse depression ; surface covered with 

 fine irregularly confluent grooved lines, more crowded towards 

 the apex, where their interstices are raised, and form irregular 

 crenulations ; on each elytron are six or seven double rows of 

 punctures, visible only here and there, principally on the anterior 

 half of the surface, being entirely obliterated for the remainder of 

 their course; on the outer disc, just before its middle, is a small 

 smooth spot, shining blue-green. 



Male. — Posterior thighs strongly incrassate, extending beyond 

 the elytra for nearly half their length, their outer surface very 

 convex, the thickest portion of the thigh being across its middle ; 

 lower edge deeply notched at the apex and armed with two stout 

 teeth, the anterior larger and situated immediately in front, the 

 other placed just at the posterior angle of the notch, the inner 

 edge of which is clothed with fulvous hairs; hinder tibise curved 

 at the base, thence nearly straight to the apex, the middle portion 

 slightly flexuose ; apex strongly mucronate, armed on either side 

 with a stout tooth, the outer one large and slightly curved, the 

 inner one very short ; inner edge notched at the base, deeply 

 grooved and sparingly clothed with pale pubescence ; basal seg- 

 ment of abdomen flattened, remotely punctured, very sparingly 

 dotted with a few fulvous hairs. 



This fine insect bears a very much stronger resemblance to S. 

 superba and quadralicollis than to S. Druryi and its allies, with 

 which insects, from the possession of a second tooth at the apex 

 of the lower edge of its hinder femora, it must be placed ; the 

 position however of this tooth is very different — instead of being 

 situated in the notch itself, as in the above-named species, it is 

 placed at its posterior angle. 



