On Pourtalesia. A Genus of Echinoidea by Loven, Sven - 1883

Stockholm: Kongl. Boktryckeriet, 1883. First edition.

1883 MONOGRAPH ON DEEP SEA URCHINS BY NOTED SWEDISH MARINE BIOLOGIST--ILLUSTRATED WITH 21 VERY FINE LITHOGRAPHS.

12 inches tall folio hardcover, marbled paper-covered boards, green cloth spine with paper title label, institutional handstamps bottom of title page, contemporary ink signature top of front paste-down, 95 pp, many figures in text, 21 fine lithographed plates; wear to corners and spine ends, binding tight, text and plates unmarked, very good.

SVEN LUDVIG LOVEN (1809 - 1895) was a Swedish marine zoologist and malacologist. The Sven Loven Centre for Marine Sciences at both Kristineberg and Tjärnö are named in his honor. He was first Keeper then Director of the Swedish National Museum in Stockholm. He was also Professor of Natural History at Stockholm University. He was made an honorary Fellow of the Royal Society of Edinburgh in 1881 and a Foreign Fellow of the Royal Society of London in 1885. The World Register of Marine Species (WoRMS) lists 174 marine species named by Lovén.

THE POURTALESIA is a genus of the family Pourtalesiidae which belongs to the irregular (bilaterally symmetrical) sea urchins. The animals measure 5–6 cm in length and live in the abyssal zone of the Atlantic, Pacific, Indopacific and Antarctic Oceans where they have been found in more than 3,000 m depth.