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A new sponge species (Demospongiae: Agelasida: Agelasidae) is described from the eastern coast of Unguja Island in the Zanzibar Archipelago. Agelas sansibarica sp. n. is compared to all other Agelas species described so far. The new species differs from its congeners mainly in its three categories of verticillate spicules (acanthostyles, acanthostrongyles, and acanthoxeas) and their sizes. Acanthostrongyles, well represented in the spicular complement, are an exclusive trait of the new species widening the morphological range of the genus. Summarizing on spicular complement and spicular morphotraits of 36 species belonging to the genus Agelas: i) 32 species show only acanthostyles from Indo-Pacific (n = 14), Atlantic (n = 17), and Mediterranean (n = 1); ii) three Indo-Pacific species show acanthostyles and acanthoxeas; iii) one species A. sansibarica sp. n. from the western Indian Ocean is characterised by the unique trait of three categories of verticillate spicules (acanthostyles, acanthostrongyles and acanthoxeas). A key for the Indo-Pacific species is supplied together with short descriptions, illustrations, and geographic range; literature on chemical bioprospecting of the genus Agelas is also provided. 31 pp., 21 figs, gr. 8.…

Couverture rigide. Zustand: bon. RO80193742: 2004. In-Folio. Relié. Très bon état, Couv. fraîche, Dos satisfaisant, Intérieur frais. 184 pages augmentées de nombreuses photographies en couleurs dans et hors texte - jaquette en excellent état. Avec Jaquette. . . Classification Dewey : 900-GEOGRAPHIE, HISTOIRE, SCIENCES AUXILIAIRES DE L'HISTOIRE. …

Hardcover. 1st Edition. Octavo. Comprising of a leporello of 12 panels with a total of 24 chromolithograph plates of uniformed officers and soldiers. HARDCOVER, bound in the original publisher's cloth and boards, both sides richly lettered and decorated in gilt, back cover with large armorial emblem, spine partly split. In good condition, fine leporello of plates. ~ FIRST EDITION. Of utmost rarity. No single institutional holding could be located. The wonderful plates are 11.5x15 cm in size, chromolithographed on thick, glossy paper, with each image captioned at bootom. E-5 IN. ~ ~ NOTE: TOTAL REDUCTION SALE: THE PRICE OF THIS BOOK IS CURRENTLY REDUCED! ~ ~ (illustrator).…