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



apice in processiim brevem producto ; tarsis posticis articulo primo 

 duobiis sequentibus longiore, etsi tibiae dimidio paullo longiore. 

 Type Xentdea alternata, Baly. 



This genus must be placed close to Plectroscelis. 



Xenidea alternata. (Plate XXI. fig. 4.) 



X. oblongo-ovata, valde convexa, nitida, subtus purpureo-nigra ; pedibus 

 obscure rufo-piceis, pui-piu'eo-micantibus, femoribus posticis dimidio 

 postico obscure purpureis ; antennis pallide fulvis, articulis G'o, T^o, 

 8vo 1 imo que nigris ; supra Isete purpm-ea ; thorace subremote punctato ; 

 elytris sat profunde punctato-striatis.-^Long. If lin. 



Ifab. Aru, New Guinea. 



Oblong-ovate, very convex, nitidous ; body beneath deep-purplish 

 black ; the legs obscure rufo-piceous, the apical half of the hinder 

 thighs obscure pui-ple. Body above deep shining piu'ple. Head smooth, 

 impunctate ; epistome elevated into a transverse ridge ; from its centre 

 a strongly raised longitudinal carina runs upwards nearly as far as 

 the upper border of the eyes ; o» either side is a deeply grooved line, 

 which, commencing close to the longitudinal ridge, a short way below 

 its centre, and just above the insertion of the antennae, runs for a short 

 distance pei-pendicularly upwards, then tui-us abruptly outwards and is 

 carried directly across the face until it reaches the inner margin of the 

 eye ; here it again forms neai'ly a right angle with its transverse por- 

 tion, and is continued upwards along the inner border of the eye nearly 

 to the apex of the latter, where it suddenly terminates ; immediately 

 above its apex is a deep round puncture; on either side the upper 

 portion of the central ridge is a smooth, impunctate, concave space, 

 bounded below and on the outer side by the above-mentioned grooved 

 line ; antennae nearly equal in length to the body, pale fulvous, their 

 Cth^ 7'h, 8'ii, and llt^ joints black. Thorax twice as broad as long; 

 sides narrowly margined, obliquely narrowed fi'om the base towai-ds the 

 apex, anterior portion obliquely truncate, the margin of this latter part 

 thickened ; disk indistinctly pimctured, the puncturing more distinct at 

 the base. Elytra distinctly pimctate-striate ; interspaces smooth, 

 nearly plane. 



Genus Plecikotetka. (Details, Plate XXI. fig. 3.) 



Corpus elongatum, convexum. Caput exsertum ; antennis mabis corpore 

 longioribus, robustis, apicem versus attenuatis, et ibi gracilibus, articulis 

 Imocrasso, curvato, 2do brevi, obovato, Stio ad 7n»"m singulis basi ad apicem 

 incrassatis, paullo compressis, perparum latitudine et longitudine decres- 

 centibus, caeteris tiliformibus, ultimo acuto ; fcemin^ gracilibus, filiformi- 

 bus, articulis 3tio ad T^ii™ non incrassatis ; mandibulis dentatis ; labio 

 subquadrato ; palpis articulo ultimo subconico ; octdis ovatis. Thorax 

 transversus, basi transversim sidcatus. Elytra anguste oblonga, pa- 

 rallela, disco punctato-striata, striis gemellatis, interspatiis fceminje 



