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Notes on some British Nudibranchs.

Published online by Cambridge University Press:  11 May 2009

C. Eliot
C. Eliot
Affiliation:
Vice-Chancellor of the University of Sheffield
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Extract

The following notes are the result partly of an examination of various living specimens at Plymouth in the spring of 1905, and partly of the study of preserved material most kindly placed at my disposal by Mr. E. J. Allen and Mr. W. I. Beaumont, of the Laboratory, Plymouth, Mr. W. E. Hoyle, of the Manchester University Museum, and the Council of the Hancock Museum at Newcastle. I must also express my thanks and obligations to Mr. T. J. Evans, lecturer in Biology at the University of Sheffield, who has prepared for me sections of the smaller specimens and embodied the results in drawings which will add very materially to any value which this paper may have.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 7 , Issue 3 , June 1906 , pp. 333 - 382
Copyright
Copyright © Marine Biological Association of the United Kingdom 1906

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References

* Vayssière's figure of the Mediterranean Archidoris tuberculata (Opisth. de Marseille, iii. pl. 1, fig. 1) seems to me to have the external characters of Staurodoris.

* It is even possible that A. & H. may have obtained the specimens from Risso, or from some one who knew the animal which he called D. testudinaria They were writing about Nudibranchs in 1841, but probably began collecting earlier.

* References to the literature are given on following page.

* The specimens here described are much the same.—C. E.

* I agree with Mr. Beaumont (l.e.) in thinking that the specific distinctness of this species from A. coerulea is doubtful.

* I understand this to be the case in Cuthonella abyssicola, but Bergh's statements in the Challenger Report, on p. 24 and p. 25, are not quite consistent.

* Cr. concinna. Since writing the above I have had an opportunity of examining a specimen of this species from the Menai Straits, given me by Prof. Herdmau. The characters agree with A. & H.'s description. No style was found on the penis. The teeth of the radula are remarkably long, narrow, and pointed.

* Below the row of denticulations (a) there can be seen under a high power three or four series of minute pits and projections (b).

* Due apparently to the ramified diverticula of the alimentary canal being seen through the semi-transparent sole.

* This dislocation seems due to the elasticity and expansive power of the tissues which form the walls of the uterus.