CREATE TABLE table_22381 ("Species" TEXT, "Common name" TEXT, "Trinidad" TEXT, "Tobago" TEXT, "Bocas Is." TEXT, "Other" TEXT)

Name the bocas for chironius multiventris septentrionalis
SELECT "Bocas Is." FROM table_22381 WHERE "Species" = 'Chironius multiventris septentrionalis'
SELECT "Bocas Is." FROM "table_22381" WHERE "Species" = 'Chironius multiventris septentrionalis'