(16) Four, or possibly five, specimens of Jacobus Giroldis' draughtsmanship belonging to the years 1422-1446, viz., (α) a Mediterranean portolan of 1422, signed "MCCCCXXII mense Junii die primo Jachobus de Giroldis Veneciis me fecit;" (β) a Portolan atlas in six sheets, of A.D. 1426, thought by some to resemble the work of Andrea Bianco in river-markings, legends, etc. This work possesses a distance-scale, but no graduation for latitude. It is inscribed, "Jachobus de Ziraldis [Ziroldis?] de Veneciis me fecit ... MCCCCXXVI." The West Africa of this work ends at Bojador ("Buider"), and gives us thirty-nine names between Arzilla and this point. Its nomenclature here is very similar to, though somewhat less full than, that of the Catalan atlas (1375).[262] Besides these two works, Giroldis has left others of less importance, viz., (γ), a Portolan atlas of 1443, consisting of six maps; (δ), a Portolan atlas, also of six maps, dated 1446; (ε?), a Portolano, unsigned, in the Bibliotheca Ambrosiana at Florence, which is perhaps his work. [Footnote 262: The same is the case with the Atlantic Islands; but though giving us fewer actual isles, it supplies more names to points therein--thirty-two in all.] Passing by the (for our purposes) less important Portolans of Battista Becharius, or Beccario, of Genoa, executed in 1426 and 1435; of Francisco de Cesani of Venice (1421), of Claudius Clavus[263] (1427), of Cholla de Briaticho (1430), there are only about ten maps or atlases belonging to this period which have still to be noticed, and which with some probability may be connected with the work of Prince Henry. [Footnote 263: An important chart for N. European cartography, and for the fact that it is one of the earliest graduated non-Ptolemaic maps.] These are--not counting the lost map brought back by D. Pedro from Venice in 1428,-- (17) The Atlas of 1435-1445, by Gratiosus Benincasa, of Ancona. (18) The so-called Andrea Bianco of 1436. (19) The Andrea Bianco of 1448. (20) The Portolano of 1434-39 by Gabriele de Valsecca, of Majorca, together with one of 1447 by the same draughtsman. (21) The anonymous planisphere of 1447. (22) The planispheres of 1448 and 1452, by Giovanni Leardo (Leardus), of Venice. (23) The planisphere of 1455, by Bartolommeo Pareto, of Genoa; and (24) The planisphere of 1457-9, by Fra Mauro of the Camaldolese Convent of Murano, in Venice. As to these, we need only remark: No. (17) is the earliest known work of Gracioso Benincasa, consists of sixty-two maps, and belongs to a MS. giving sailing directions, etc. Its West Africa does not call for special remark, though the later discoveries of Prince Henry's lifetime are admirably illustrated in the same draughtsman's work of 1468, 1471, etc.