Hamilton and Colgate Announce Membership in edX - Hamilton and Colgate will be new contributing partners in the nonprofit online learning platform.
semicolon in a series
To clarify in a series, use the semicolon before and: "Among the speakers were Doug Weldon, the Stone Professor of Psychology; Donald Carter, chief diversity officer and professor of Africana studies; and Lydia Hamessley, associate professor of music." Place semicolons outside of quotation marks.
SOURCE: Hamilton College Editorial Style Guide