206 Phytophaga Malayana. 



broader in front than long, subcampanulate, its anterior border con- 

 cave-emarfinate ; five lower joints of the antennae pale fulvous, the 

 third to the fifth stained with fuscous, the remaining joints entirely 

 fuscous; apical half of jaws black. Thorax more than twice as 

 broad as long ; sides rounded, converging in front, anterior angles 

 nearly obsolete, hinder angles armed with an obtuse tooth ; sur- 

 face smooth, impunctate. Scutellum scarcely broader than long, 

 subtrigonate, the apex broadly rounded. Elytra broader than 

 the thorax, convex, very slightly excavated below the basilar 

 space, longitudinally sulcate within the humeral callus, the latter 

 thickened ; striae strongly punctured, entire, the punctures of 

 equal depth to the apex ; interspaces slightly convex. 



63. Rhyparida triltneata, Baly. 

 Desc. New Gen. and Spec. Phyt. p. 9. 

 Elongata ( $ ), subelongata ( ? ), convexa, pallide picea, nitida ; 

 thorace supra et infra pectoreque piceis ; elytris infra basin 

 vix excavatis, thorace latioribus, fere parallelis (^), postice 

 attenuatis ( ^ ) ; striis ante medium fortiter yjunctatis, pone 

 medium minus distinctis, apicem versus fere deletis ; inter- 

 spatiis ante medium leviter convexiusculis ; vittd suturali, 

 basi angustata, alteraque marginali, postice abbreviatis, 

 piceis ; femoribus muticis. 

 Long. 3 — % lin. 

 Hab. New Guinea. 



Head prominent; front distinctly but not very closely punc- 

 tured, its lower end impressed with the usual longitudinal groove ; 

 epistome longer than broad, distinctly separated from the front, 

 pentagonal, apical angle acute ; sides straight, slightly con- 

 verging backwards, anterior border deeply concave-emarginate, 

 angles of the notch produced, obtuse ; surface more coarsely 

 and deeply punctured than the front ; jaws nigro-piceous ; an- 

 tennae slendei-, entirely filiform. Thorax twice as broad as 

 long ; sides rounded and converging from base to apex, nearly 

 parallel at the extreme base, all the angles armed with an obtuse 

 tooth ; above transversely convex, sides in front in the $ strongly 

 and obliquely deflexed ; surface subopake, granulose, coarsely 

 but not very closely punctured. Scutellum longer than broad, 

 semilanceolate-ovate. Elytra broader than the thorax, sub- 

 parallel in the $ , obcuneiform in the $, faintly excavated below 

 the basilar space, longitudinally impressed within the humeral 



