17. The genus Syncalypta Steph. (Coleoptera: Byrrhidae). The Canarian spp. Syncalypta integra Woll., S. granulosa Woll., S. tenerifensis n.sp., and S. canariensis Franz are found to belong to subgenus Atlantopsis Franz as is also S. ovuliformis Woll. from Madeira. The type material of all Canarian spp. is investigated and a key, based also upon genitalia, is given. 18. The genus Macrocoma Chap. (Coleoptera: Chrysomelidae). A key of all Canarian spp. is given, viz. M. divisa Woll., M. obscuripes Woll., M. dubia Woll., M. latifrons Har. Lindb., M. splendidula Woll., M. splendens Har. Lindb., M. occidentalis n.sp., and M. occidentalis franzi n.ssp. The species are very similar and closely related to eachother and genital structures are found to be of importance for their separation.