from Pulo Penang or its Neighbourhood, 



143 



punctis minutis inordinatis sat confertis : scutellum subcordiforme, 

 paucis punctis ornatum : elytra brevia, robusta, ad apicem late 

 rotundata, marginibus paulum sinuatis (humeri ob depressionem 

 obliquam post-humeralem satis extant), punctata ; puncta baud 

 thoracis puncta magnitudine sequant, sed magna, prsesertim juxta 

 margines (qui rugosi apparent), et conferta, juxta apicem striis 

 disponuntur : coitus subtus, pedes et antennce nigra. 

 Long. corp. Hn. 3 ; lat. lin. 2. 



C. metallicum is a smaller insect than C. ceneo-viride ; the 

 punctures differ in the two species in size, and the antennae and 

 legs in colour. 



Hab. Pulo-Penang. 



Subfam. Gallerucid^, 

 Genus Rhombopala, Chevr. 



Genus Gallerucidarum Adorio affine, sed species plerumque statura 

 grandiores, latiores, et rotund atiores. Caput verticale, pene recon- 

 ditum. Palpi maxillares ad apices globosi, articulo penultimo incras- 

 sato, brevi, quasi subconico (baud cylindrico ut in Adorio)^ articulo 

 ultimo brevi, et lato. Antennce simplices, satis robustse, et breves, 

 articulis ultimis hand 2°'*'^™ longitudine superantibus. TAoro;^ brevis, 

 hand ut in Adorio ad basin recte transversus, sed late inflectus vel 

 arcuatus ; latitudine vix singulum elytrorum superans. Scutellum 

 subtriangulare. Elytra lata, robusta, rotundata, brevia, parvum 

 corpus amplitudine complectunt. Pedes robusti, unguiculis undique 

 bifidis. 



This genus is a very natural one ; its representatives may at 

 once be separated from those of Adorium by their generally 

 larger size, their more broadly ovate form, their shorter and 

 more robust antennae, and the globular form of the maxillary 

 palpi; the species composing it are found in China, Java, and 

 the East Indies. 



1. R. duodecimpunctata, Chevr. 



R. latissima, subtiliter punctata, pallide flava, nigro maculata : caput 

 breve, ad frontem transverse arcuatim depressum : thorax trans- 

 versus, arcuatus, impunctatus, pallide flavus ; ad medium undique 

 macula nigra insularis subcylindrica apparet : scutellum triangulare, 

 impunctatum : elytra lata, ad latera amplissima, subtiliter punctata, 

 undique maculis 6 ornata, ordine dispositis (3 juxta suturam, tres- 

 que alise oppositse juxta latus), insulatis, circularibus, magnis ; iis 

 ad suturam plerumque illas apud latera magnitudine superantibus : 

 antennce pallide testacese, art. 10""^ et 11'"'' fuscis. 



Long. Corp. lin. 5-^ ; lat. lin. 4. 



I have received this very conspicuous species from Chevrolat^s 

 collection, who obtained examples of it from Siam. 



