Author: Maas, O. [AND] Romanes, G. J.
Title: Reports on an exploration of the west coasts of Mexico, Central and South America, and off the Galapagos Islands in charge of Alexander Agassiz by the U. S. Fish Commission steamer "Albatross" during 1891, Lieut. Commander Z. L. Tanner, U. S. N., commanding.. XXI. Die Medusen. [AND] Preliminary observations on the locomotor system of medusae [AND] Concluding observations on the locomotor system of medusae.
Description: Cambridge, MA, Museum of Comparatie Zoölogy, 1897. [AND] London, The Royal Society, 1876-1880. Three papers in one. 4to (29.4 x 23.8 cm). Maas: title page, 88 pp.; 14 tinted or chromolithographed plates, one very large, multi-folded coloured map. Romanes: two tile pages, 87 [45; 42] pp.; two lithographs printed in purple. Near contemporary burgundy pebbled cloth with gilt title on the spine. = The paper by Maas may be the more important and rarer one; the two by Romanes, however, are bound in front. Together they form three well-illustrated works on medusae. Hinges broken, near detached; otherwise a very good, clean item.

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