146 Rev. H. Clark on Species of Phytophaga 



Genus Goniopleuka, Westwood ; Griff. ; Cuv. An. King. Ins. ii. 

 149, pi. 67. f. 3. 



G. viridipennis. 



G. parallela, elongata, tenuiter pubescens, rufa, viridipennis : caput 

 crebre punctatum : thorax ad apicem haud capite latior, quadratus, 

 ad latera undique apud medium late angulatus, inter bos angulos 

 et basin undique fovea lata obliqua mini me profunda apparet ; 

 thorax rarius rufo-pubescens, crebre punctatus : scutellum subtri- 

 angulare, rufum, nitidum : elytra parallela, elongata, rarius pube 

 ornata, punctata : antennce, pedes et corpus subtus rufa. 



Long. corp. lin. 8-5| ; lat. lin. 3|-2|. 



This second species of the genus differs from G. auricoma not 

 only in pattern, but also in the simple (not rounded or almost 

 bidentate) angle on the margins of the thorax. 



I have received the species from M. Deyrolle, who obtained 

 it from Malacca; a specimen is in Mr. Baly's collection from 

 Penang. 



Genus G3decerus, Redt.* (Hugel's ' Kaschmir/ iv. 556.) 

 CE. rufo-fuscus. 



CE. tenuis, elongatus, subparallelus, subtiliter punctatus, rufus, elytris 

 fuscis, testaceo adumbratis : caput infra antennarum basin trans- 

 verse foveolatum, impunctatum, pallide flavum : thorax quadratus, 

 latera vix inflecta ; margo anterior transverse rectus, posterior sub- 

 sinuatus ; ad medium discum fossa profunda lata transversa patet ; 

 thorax impunctatus, flavus : scutellum triangulare, leeve, pallide 

 flavum, marginibus fuscis : elytra subparallela, elongatula, punc- 

 tata, punctis parvis et remotis : antennce validse, breves, articulo 

 l mo producto, reliquis brevibus, art. l mo flavo, reliquis fuscis : pedes 

 flavi, tibiis tarsisque fuscis : corpus subtus flavum. 



Long. corp. lin. 2 ; lat. lin. f . 



Hah. Pulo-Penang. 



Genus Dercetis, gen. nov. 



Corpus ovatum, latum, depressum. Caput subporrectum, breve ; 

 oculi ovales ; palpi maxillares elongati, cylindrici, art. penult, brevi, 

 subtiliter incrassato, art. ultimo producto, acuminato. Thorax brevis, 



* I am indebted to Mr. Baly for the generic determination of this species, 

 and also for a reference to Hugel ; as the work is scarce, it may be well to 

 append here briefly the diagnosis of the genus. Antennce 11-articul. fili- 

 formes, art. 5° et 6° diffbrmibus : labrum subquadratum, antice rotundatum : 

 mandibulce facie interna excavata, margine dentato : palpi 7nax. 4-articulati, 

 art. 3° 2 primis longiori; ultimo brevi, acuminato : tarsi 4-articulati, art. 3° 

 bilobo, unguiculis dente late acuto armatis. 



The insects composing the genus are in size small, of parallel form, and 

 notable by the peculiar incrassation of the fifth and sixth joints of the an- 

 tennae of the male. 



