BritishTunicataPlate13

Description:

Description: English: Alder, Joshua, Embleton, Dennis, Hancock, Albany, Hopkinson, John,Norman, Alfred Merle ,1905-12 The British Tunicata; an unfinished monograph, by the late Joshua Alder and the late Albany Hancock. Edited by John Hopkinson, with a history of the work by the Rev. A. M. Norman.London,Printed for the Ray Society. Volume 1 Plate 13 XIII Ascidia sordida A and H (p.119 ) accepted name Ascidiella aspersa (Müller, 1776) REPRODUCTION 1. Test and mantle laid open, showing reproductive organs- ovary in centre, male caeca on either side, and oviduct full of eggs, mostly passing out in single series: almost twice natural size. 2. Anal aperture, oviduct and vas deferens : magnified. Cf. Plate XII figs. 3 and 4. (File:BritishTunicataPlate12.jpg) 3 Aperture of oviduct (a) and of vas deferens (b):more highly magnified. 4-6. Clusters of eggs: highly magnified.7 A single ovum showing glassy layer (a) and yolk (b). 8 Male caeca: magnified. Date: 1850s date QS:P,+1850-00-00T00:00:00Z/8. Source: https://www.biodiversitylibrary.org/. Author: Alder and Hancock.