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OnEcteinascidia bombayensis N. Sp. (A new ascidian from Bombay.)

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Proceedings / Indian Academy of Sciences

Summary

The author describes a new species ofEcteinascidia (fam. Clavelinidæ) collected from Bombay. The present species can be distinguished from other existing species by the following characters: the siphonal apertures are 5-lobed; tentacles are of three lengths and about 64 in number; the posterior dorsal languets are long conical and distinct; the transverse muscles completely encircle the pharynx; the internal longitudinal bars have projections comparable to papillæ; the stomach has folds in its walls.

Ten to twelve individuals form a colony, each individual being attached by a peduncle to a basal stolon network. Development is internal, the atrial cavity acting as a brood-pouch, and the young are discharged into the sea as fully developed tadpoles.

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Abbreviations

at.ap.:

Atrial aperture

br.:

Branchial sac (pharynx)

br.ap.:

Branchial aperture

d.l.:

Dorsal languet

emb.:

Embryo

end.:

Endostyle

ep.t.:

Epicardial tube

ht.:

Heart

int.:

Intestine

int.a.:

Intestinal opening

int.lb..:

Internal longitudinal bars

ov.:

Ovary

ov.d.:

Oviduct

pp.:

Papillary projection

r.:

Rectum

st.:

Stomach

st.a.:

Stomach opening

st.r.:

Ridges on stomach wall

stg.:

Stigmata

t.:

Testis

tad.:

Tadpole

tr.v.:

Transverse vessels

v.d.:

Vas deferens

Literature cited

  1. Berrill, N. J. “Ascidians of the Bermudas,”Biol. Bull., 1932,62, 1.

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  2. Herdman, W. A. “Report on the Tunicata collected by Prof. Herdman at Ceylon in 1902,”Rep. Pearl. Oyst. Fish. Ceylon, 1906,5.

  3. - “A revised classification of the Tunicata,”Journ. Linn. Soc. Zool., 1891,23.

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Author information

Authors and Affiliations

  1. Department of Zoology, Lucknow University, India

    S. M. Das

Authors
  1. S. M. Das
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Additional information

Communicated by Prof. C. R. Narayan Rao,m.a.

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Das, S.M. OnEcteinascidia bombayensis N. Sp. (A new ascidian from Bombay.). Proc. Indian Acad. Sci. 8, 295–300 (1938). https://doi.org/10.1007/BF03048218

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  • DOI: https://doi.org/10.1007/BF03048218

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