A taxonomic study of the genus Amusurgus Brunner von Wattenwyl, 1893 from China is presented. The genus is divided into three subgenera by the difference of tympana. Five species are described with two new species, one new combination, one resurrected name and one new synonymy. Keys to subgenera and species from China are given.

A new species of Orthosiphon (Lamiaceae), Orthosiphoncinereus A.J.Paton, sp. nov. from Angola is described and the eight species of Orthosiphon in Angola listed with reference to previous accounts. Orthosiphonnewtonii Briq. is reduced to the synonymy of Endostemontubulascens (Briq.) M.Ashby.

Eleven new replacement names in the genus Mesochorus Gravenhorst, 1829 are proposed due the synonymy with Plectochorus Uchida, 1933 and Stictopisthus Thomson, 1886 made by Wahl in his cladistic analysis of the genera of Mesochorinae.

Abstr.-\ct.— New synonymy afforting American Scolytidae is proposed as follows: Acanthotomicus granulatus (Ferrari), n. comb. {^Miinips uncinatus Wood). Araptus dcyrollei (Blandford). new comb. ( -^Araplus insinuatus Wood), Cnesinus adiistus Schedl { = Cnesinus atrodeclivis Wood). Corlhylocurus mexicanus (Schedl). n. comb. {=Corthylus cylindricus Schodl). Corthylus collaris Blandford {=Corthylu...

Proceratium bhutanense De Andrade, 2003, syn. n. is here found to be conspecific with Proceratium williamsi Tiwari, 2000 and accordingly treated as a junior synonym.