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File:Pedicellina cernua 001.png

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Summary

Description
English: Pedicellina cernua (Pallas, 1774) from Guernsey, a British Crown dependent island in the English Channel. Entire colony ×27. The colony has three growing ends – a; 1–8 – individuals of colony; 1 and 8 are quite immature; 7 is still young, tentacles retracted; 2 is seen in longitudinal section; g – generative organ, and below it the ganglion; m – mouth; r – rectum; s – stomach; between g and r are three embryos in the brood-pouch; the tentacles are retracted; in 5 and 6 the tentacles are expanded; in 6 two embryos are seen within the circle of the tentacles, to the left of them is the rectum, and to the right the mouth; 3 is in the act of losing its calyx, and has already developed the beginning of a new polypide-bud; in 4 the primary calyx has been lost, and the new calyx is clearly marked off from the stalk.
Date
Source Harmer S. F. Polyzoa. In: Harmer S. F., Shipley A. E. The Cambridge Natural History, vol. 2. – London, New York: Macmillan and Co, 1901. – P. 487, fig. 243. Reprint
Author Sidney Frederic Harmer (1862–1950) – author of the chapter

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Date/TimeThumbnailDimensionsUserComment
current22:19, 18 January 2013Thumbnail for version as of 22:19, 18 January 20131,049 × 450 (190 KB)Mithrilwhite background
18:26, 24 February 2012Thumbnail for version as of 18:26, 24 February 20121,036 × 399 (495 KB)JoJan

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