In continuation of my examination of the Neotropical Acanthocinini, the occasion arises to deal with certain Caribbean species, because of material from various sources, sent to me by Dr. P. WAGENAAR HUMMELINCK, of the Zoölogisch Laboratorium der Rijksuniversiteit Utrecht; Ir. R. H. COBBEN, of the Laboratorium voor Entomologie der Landbouwhogeschool, Wageningen; Dr. T. H. FARR, of the Museum of Science, Kingston, Jamaica, and the Museum Frey, Tutzing bei München, as well as material from my own collection. The material covered in this paper comprises the following species: Lagocheirus araneiformis guadeloupensis Dillon, from St. John, St. Martin, and St. Eustatius; Fisherostylus bruneri (Fisher) gen. nov., from Cuba; Leplostyloides turbidus gen. nov., sp. n., from Saba, and St. Eustatius (pl. I 1—2); Styloleptus nigrofasciatus sp. n., from Hispaniola (pl. I 3); Styloleptus divisus sp. n., from Hispaniola (pl. I 4); Antilleptostylus nigricans (Fisher) gen. nov., from Puerto Rico; Pygmaleptostylus pygmaeus (Fisher) gen. nov., from Cuba; Atrypanius trinidadensis sp. n., from Trinidad (Pl. II 3); Urgleptes sandersoni sp. n., from Puerto Rico (Pl. II 2); Urgleptes haitiensis sp. n., from Hispaniola (Pl. II 1); Urgleptes cobbeni sp. n., from Saba, and St. Eustatius (Pl. III 1—3); Urgleptes puertoricensis sp. n., from Puerto Rico (Pl. IV 1—3); Pentheochaetes trinidadensis sp. n., from Trinidad (Pl. IV 4); Nyssodrystes freyorum sp. n., from Trinidad and Venezuela (Pl. IV 5).