i8 
ZOOLOGY OF THE FAR EAST. 
elevated at the nodes of the reticulation. The whole structure is very thin ; in 
opaque specimens it has a pale golden colour, which contrasts well with the translu- 
cent white of the soft parts, though a yellowish tinge is given to the whole organism 
by the ectocj^st. In specimens mounted in Canada balsam it is difficult to see details 
of the structure of the shield because of its transparency. 
The oral surface of the capitulum and the whole surface of the stalk is quite 
smooth. 
The general anatomy, both in the stalk and in the capitulum, clo.sely resembles 
that of Loxosomatoides, except in respect to the muscul iture. Some polyps in my 
specimens possess unripe gonads in the form of a broad transverse band interrupted 
before and behind and lying in the upper half of the capitulum. 
Musculature. The spincter of the orifice consists of a considerable number (at 
least 6) of circular strands. The strands that lie externally are more or less inter- 
rupted. The muscles of the lophophore apparently resemble those of Loxosomatoides 
and there is a well-marked retractor running along the centre of each tentacle. 
The body-muscles lie mainly in the body-wall. Possibly the outer strand (see 
fig. I) is entirely superficial, but the inner strand certainly bends inwards above and 
its upper end is probably attached to the outer wall of the stomach. 
The muscles of the stalk are directed outwards and downwards from the capitu- 
lum on the oral surface. They usually form two somewhat divergent groups arranged 
symmetrically, but this is more clearly the case in some polyps than in others. The 
lower end of the muscle is situated distinctly above the base of the stalk. I have not 
been able to detect any trace of muscle-fibres on the aboral face of the stalk or in the 
Type-specimen. No. 7157/7 Z.E.V., Ind. Mus. (Zool. Survey of India) : in alcohol. 
Locality, etc. The island of Koh Yaw, outer part of the Tale Sap (Great Lake) 
rhizome. 
