202 Mr. J. S. Baly on the Phytophaga. 



in front ; posterior angles produced into a small acute tooth ; upper 

 surface moderately convex, minutely pimctm'ed, base impressed by a 

 broad ill-delined transverse groove, disk impressed on either side by a 

 large shallow fovea : scutellum triangidar, its apex obtuse : elytra 

 broader than the thorax, oblong-ovate, their outer edge furnished with 

 a distinct, slightly reflexed border ; surface subnitidous, covered with 

 minute punctures, their interspaces very finely rugose, giving the whole 

 surface a granular appearance ; on the disk of each elytron are three or 

 four indistinct longitudinal costae : abdomen black, covered with coarse 

 adpressed pale-fulvous hairs. 



Genus Doeyxeka. 

 (Plate XI. fig. 10, under surface of D. grossa, Hope.) 



Corpus oblongum, convexum. Caput valde defiexum, facie fere perpendi- 

 culare; antennis robustis, filiformibus, articulo primo curvato, basi 

 gi'acili, hinc ad apicem incrassato, secundo brevi, tertio illo duplo 

 longiore, quarto tertio paullo longiore ; mandibidis validis j labro trans- 

 verso ; paJpis maxillaribus articulo ultimo obovato, apice conico ; meiito 

 transverso-quadrato ; ligula subquadrata, basi angustata ; oculis promi- 

 nidis, integris. Thorax transversus, dorso utrinque impressus, lateribus 

 angulatis. Elytra thorace latiora, apicem versus paullo ampliata, apice 

 rotundata, marginata. Pedes robusti, coxis anticis fere contiguis, tar- 

 sorum articulo basali duobus sequentibus longitudine fere sequali, 

 unguiculis subtus prope medium dente valido armatis. Prosternum 

 breve, inter coxas anticas ad medium extensum. Metasternum inter 

 coxas intermedias in processum validum protensum. 



Tj'pe, GaUeruca grossa, Hope. 



The produced metasternum separates this genus from Gcdlemca 

 and its allies. 



Genus Leptaethea. 



Corpus oblongo-ovatum, postice ampliatum. Caput thoraci ad oculorum 

 marginem posteriorem insertum ; antennis gracilibus, corporis longi- 

 tudine fere jequalibus, filiformibus, sjepe ad apicem angustatis, articulo 

 primo curvato, a basi ad apicem incrassato, secundo brevi, tertio illo 

 plus duplo longiore, quarto duobus pra?cedentibus sequali ; labro trans- 

 verso ; mandibidis apice dentatis ; palpis maxillaribus articulo primo 

 parvo, secundo paullo elongato, subclavato, tertio paullo incrassato, 

 subpyriformi, ultimo conico, obtuso ; mento transverse ; ocidis pronii- 

 imlis, ovatis. Thorax transversus, a basi ad apicem angustatus, apice 

 coneavo, angidis anticis antrorsum productis. Smdellum subtrigonatimi, 

 apice rotundatimi. Elytra oblonga, apicem versus pei-panmi ampliata, 

 apice conjimctim late rotundata, valde convexa. Pedes graciles, elon- 

 gati ; procoxis subcontiguis, prosterno angustatissimo divisis, mesocoxis 

 magis separatis, unguiculis unidentatis. 



Type, Lepturthra abdoininalis, Baly. 



