from Pulo Penang or its Neighbourhood. 141 



(subtilissime ct sparsim punctatum) : elytra in S punctata, in $ 

 crebre tuberculata (tuberculis ad latera exstantibus, ad suturam 

 post medium obliteratis, sed juxta bumeros valde prominentibus) : 

 corpus subtus viridi-cyaneum : pedes validi, viridi-cyanei. 

 Long. corp. lin. 5^-6 ; lat. lin. 2|. 



I received an example of this species from Mr. Stevens, a few 

 weeks ago, a $ of a bright burnished green colour. Since then, 

 by the kindness of Mr. A. R. Wallace, I have had the opportunity 

 of examining a series of both sexes of the species, the uniform 

 colours of which were blue. Very happily, the gentleman 

 who collected these specimens must have found examples in 

 coitu, for they were carefully labelled by him as males and 

 females; and hence we have the authority of the captor for the 

 remarkable fact that the two different forms arc the sexes of one 

 and the same insect. 



In the cabinets of Mr. Baly and the Rev. Hamlet Clark. 



Hah. Pulo-Penang. 



Genus Riiyparida, Baly (Journ. Entom. i. 286). 

 1. R. atripennis. 



R. lata, punctato-striata, nitida, rufa, elytris nigris : caput punc- 

 tatum, rufum ; oculi ad margines interiorcs sinuati : thorax trans- 

 versa, sat rotundatus, lateribus rotundatis et versus caput constric- 

 tis, ad latera tenuiter marginatus, punctis satis fortibus sparsis (ad 

 angulos anteriores obsoletis) ornatus ; margines anterior posterior- 

 que fovea tenui punctorum notantur : scutellum elongato-triangu- 

 lare, nitidum, impunctatum : elytra thorace latiora, brevia, lateri- 

 bus parallelis et subsinuatis, apud humeros breviter angulata, ad 

 apicem rotundata, punctato-striata ; stria G ta apud basin fortiter sed 

 breviter foveatur, ita ut humeri ipsi rotundati extant : antennce sat 

 tenues, pallide testacea?, articulus basalis rufo-testaceus : pedes et 

 corpus subtus rufa. 



Long. corp. lin. 3^ ; lat. lin. 2^-. 



In my own cabinet and that of Mr. Baly. 

 Hab. Penang. 



2. R. rufa. 



R. lata, parallela, brevis, nitida, leviter punctato-striata, rufa, 

 nigro maculata : caput punctatum, rufum ; antennce graciles, fili- 

 formes, flavo-rufoe : thorax transversus, antice rotundatus, ad latera 

 undique marginatus, punctatus, rufus : scutellum elongato-subtri- 

 angulare, nitidum, rufum : elytra brevia, thorace latiora, humeris 

 prominulis; leviter punctato-striata, nitida, rufa, humeris (angustc) 

 et apice (late) nigris ; macula apud apicem transversa versus bu- 

 meros oblique extendit : pedes flavo-rufi : corpus subtus rufum. 



Long. corp. lin. 4^ ; lat. lin. 3. 



In my own cabinet and that of Mr. Baly. 

 Hab. Pulo-Penang. 



