Echiuroids from Brackish Water. 
337 
I. Annandale, N. 
Annandale, N., and 
Kemp S. W. 
Embleton, A. L. 
of segmental organs, the lateral margins of the funnels of which are elongated into 
spirally-coiled lobes. The segmental organs are situated posterior to the level of the 
ventral hooks, the first two pairs are rather poorly developed and the fourth pair 
is the best developed of all. The anal vesicles are of a light yellowish tinge, very 
much contracted in the specimen and about one third of the length of the animal. 
Type specimen in the collection of the Zoological Survey of India (Indian Museum) 
No. W J-f^. 
The species differs from all those previously described in having four pairs of 
segmental organs, in the number of muscle bands and in the general arrangement of 
the papillae on the surface. 
LITERATURE. 
Zoological results of a tour in the Far Ea.st. Part i. 
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1916. 
Fauna of the Chilka Lake — The Echiuroidea of the Lake 
and the Gangetic Delta. Mem. Ind. Mus., Vol. v, 1915. 
On the structure and affinities of Echiurus unicinctus. 
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Die Echiuren (Gephyrea Armata). Nova acta K. Leop. 
Carol. -Deutsch. Acad. Naturf., Bd. XLI, pars II, Nr. 
I, 1879. 
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Contributions to the anatomy and histology of Thalassema 
neptuni, Gaertner. Zool. Jahrb., Abt. Anat., Bd. 12, 1899. 
On the Sipunculids and Echiurids collected during the 
"Skeat" Expedition to the Malay Peninsula. Proc. 
Zool. Soc. London, 1905. 
On Thalassema neptuni, Gaertner. Zool. Anz., Vol. iv, 1881 
Etude sur les Gephyriens Armes ou Echiuriens. Rev 
Zool. Suisse, Yo\. 3, 1886. 
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with an attempt to revise the Group and to deternine 
its Geographical Range. Wilkys Zool. Res. New Britain 
and new Guinea, 1898- 1902. 
Gephyrea and Phoronis in Cambridge Nat. Hist. Vol. ii, 
1896. 
Beitrage zu der Kenntniss der Gephyreen aus dem Malayis- 
chen Archipel. Naturk. Tijdschr, Nederland. Lndie. Vol. 
xliii,' 1883. 
Beitrage zur Kenntniss der Gephyreen. II. Die Organisa- 
tion des Echiurus pallasii. Zeitschr. wiss. Zool. Vol. xxxiv, 
1880. 
4. Greef, R. 
5. Ikeda, I. 
7- 
8. 
9- 
II 
12 
Jameson, L. H. 
Lanchester, W. F. 
Lankester, E. R. 
Rietsch, M. 
10. Shipley, A. E. 
Shipley, A. E. 
Sluiter, C. Ph. 
13. Spengel, J. W. 
