Rev. H. Clark on the Chrysomelida of South Africa. 169 



XVII. — Catalogue of Chrysomelida of South Africa. 

 By the Rev. Hamlet Clark, M.A., F.L.S. 



[Continued from p. 124.] 



17. Polysticta Clarkii, Baly, Trans. Ent. Soc. 1864. 



Two examples of a most beautiful species have just been re- 

 ceived from Dr. Livingstone's expedition, the exact locality of 

 which was unknown, but in or near the Zambesi country : the 

 species (the largest in the genus) is described in a paper read 

 by my friend .Mr. Baly at the last meeting of the Entomological 

 Society, which will shortly be published in the ' Transactions.' 



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



18. P. X^guttata, Fab. Ent. Syst Suppl. 85. 28 ; 

 Syst. El. i. 432. 55. 



One of the most common of the South-African Chrysomelas. 



19. P. 20.guttata, n. sp. 



P. ovalis, penitus rotundata, punctato-striata, nigra, maculis 20 cir> 

 cularibus fiavis ; capita subtilissime punctate, ad medium longitu- 

 dinaliter foveolato, rufo, labro interdum nigro ; thorace elytris 

 angustiore, lateribus penitus parallelis, teuuiter marginatis, disco ad 

 latera crebrius et t'ortiter, ad medium leviter punctato, nigro (ma- 

 cula rufa interdum undique ad latera, interdum ad medium trans- 

 verse apparet et maguitudiue et facie quam plurimum varians) ; 

 scutello subtriangulari, Iseri, nigro ; elytris sat convexis, fere 

 rotundatis, eeneo-nigris, maculis undique 10 flavis, circularibus, 

 insulatis, fere sequaUbus; corpore subtus nigro, pedibus riifis, 

 antennis rufo-fuscis. 



Long. Corp. lin. 3^-3|; lat. lin. 2^-3. 



I register this as a separate species with much doubt : it is 

 decidedly more round, less oblong, than P. \0-pustulata, Thunb., 

 and the punctures on the strise seem to be a trifle more minute 

 and more separated than in that species. It represents a form 

 that is very common at the Cape. 



20. P. guttata, Fab. Ent. Syst. i. 313. 28. 



P.pardalina (Coccinella), Fab. Syit. El. i. 386; Ent. Syst. i. 291.115. 

 P. '20-guUata, Oliv. (teste Chev.). 



P. \0-pitstulata, Thunb. Mus. Nat. Acad. Upttl. iv. 44. 4 ; Act. Reg. Soc. 

 Upsal. viii. 182. 



A remarkable black variety of this common species has been 

 sent home by my friend Mr. Trimen. The elytra are black, the 

 apex being generally obscurely rufous ; the thorax of a bright 

 yellow colour^ with the usual markings of fuscous. 



21. P. 20'maculata. 

 P. ovalis, sat gibbosa, punctato-striata, rufo-ferruginea ; capite punc- 



