Once more we have seen that the first two portolani plainly influenced by Prince Henry's discoveries are the Valsecca[275] of 1434-9 and the 1448 map of Andrea Bianco, drawn in London; and that the 1436 Bianco is probably a copy of a thirteenth-century work, showing no clear evidence of the new explorations. As to the Bianco of 1448, we may here add a word to what has been already said. On this example we find the west coast of Africa end suddenly with Cape Rosso, or Roxo, immediately south of Cape Verde, and "from this point the coast is drawn straight eastward in a style which indicates that the country beyond is unknown;" the "outline of this southern shore of Africa being delineated according to the maps of the Macrobius type." The work of 1448 is frequently copied in following years; as, for example, on several designs of Gratiosus Benincasa (1435 to 1482), wherein the west coast of Africa, from Ceuta to Cape Verde, "has the same contours and the same names."[276] All of these charts are believed by Nordenskjöld to be copies of the same Portuguese original. On the other hand, "Benincasa's Atlas of 1471 is widely divergent as regards the legends, and extends much further south.[277] It reproduces the discoveries along the coast down to Pedro de Sintra's voyage of 1462-3, and seems in part to be based on direct information from Cadamosto."[278] [Footnote 275: The Valsecca Map delineates the West African coast to Cape Bojador (C. de Bujeteder). Beyond this the outline of the coast is "suggested" for a distance about as great as from the Straits to Bojador, but with no names or legends except "Plagens arenosas," "Tarafal," "Bujeteder," and at the extreme south, "Tisilgame."] [Footnote 276: This is especially true of the Benincasa of 1467. Nordenskjöld gives twenty-eight parallel names from this and the Bianco of 1448 between Bojador and Capes Verde and Rosso.] [Footnote 277: To Rio de Palmeri, immediately beyond Cape St. Anne.] [Footnote 278: This may be seen, as Nordenskjöld suggests (_Periplus_, p. 127), by comparing the names on the lower part of Benincasa's West Africa with the following names occurring in Cadamosto's account of De Sintra's voyage: Rio di Besegue, Capo di Verga, Capo di Sagres, Rio di San Vicenzo, Rio Verde, Cape Liedo, Fiume rosso. Capo rosso, Isola rossa, Rio di Santa Maria della nave, Isola di Scanni, Capo di Santa Anna, Fiume della palme, Rio de Fiume, Capo di monte, Capo Cortesi, Bosco di Santa Maria. Benincasa, however, appears to have access to other sources besides Cadamosto, as many of his names are not found in the latter.] Lastly, a more special notice must be taken of the great map of Fra Mauro, 1457-9.