EXPLANATION OF PLATE I. 
Chitaspis athleticus, gen. et sp. nov. 
Lateral view of a part of the type-specimen ^ showing two polypiferous 
and parts or the whole of three non-polypiferous segments. One of 
the poh^ps has lost its capitulum. x 46 '5 . 
Alcyonidium mytili, Dalyell. 
Retracted polypide from a specimen on a shell of Potamides fluviatilis 
from the Chilka Lake in Orissa. x ca. 84. 
Triticella pedicellata (Alder). 
Part of the rhizome of a specimen from the tail of the sea-snake Enhy- 
dris hardwickii from the Tale Sap, Peninsular Siam. x loi. 
The stalks of the zooecia have been cut off near the base and have 
probabh' been somewhat compressed in the process. 
PaludiceIvLA elongata, Leidy. 
Right lateral view of a zooecium from the roots of a willow tree at the 
edge of the Moo-Too creek, Tai-Hu, Kiangsu Province, China. (Stained 
with borax carmine), x ca. 35. 
PaIvUdicella pentagonals, sp. nov. 
Left lateral view (slightly oblique) of a zooecium of the type- specimen. 
(Stained with borax carmine), x 67-5. 
Orifice and adjacent parts of another zooecia from the same colony. 
(Stained with borax carmine), x ca. 79. 
ViCTORELLA BENGALENSis, Annandale. 
A group of zooecia from a colony growing on a stick in the Tale Sap, 
Peninsular Siam. (Stained with borax carmine), x ca. 34. 
Potypide (partly expanded) from colony from Port Canning, Gangetic 
delta, a = Cardiac antechamber, c = Cardiac limb of stomach, 
ca = Oesophageal valve, f = Funiculus, i = Intestine m = Car- 
diac muscle, oe = Oesophagus proper, p = Pharynx, r = Rectum, 
s = Pyloric limb of stomach, t =-- Tentacles. 
HiSLOPIA CAMBODGIENSIS (Jullien). 
Fig. 8. — Terminal part of a branch of a specimen growing on a living shell of 
Anodonta from the south-east part of the Tai-Hu, Kiangsu Province, 
China, x 22*5. 
HiSLOPIA MALAYENSIS, Sp. noV. 
Fig. 9. — Zooecium from type-specimen. (Stained with borax carmine), x 
ca. 34. 
BOWERBANKIA CAUDATA, Hincks. 
Fig. 10. — Terminal zooecium of a colony from Port Weld, west coast of the 
Malay Peninsula, x ca. 34. 
,, io«. — Another zooecium from the same colony, showing parietal muscles, 
etc. (Stained with borax carmine*, x ca. 34. 
yy — Two zooecia from a colony from the Tale Sap, Peninsular Siam, show- 
ing the expansion of the tail ' ' to form an organ of adhesion in one 
zooecium and its almost complete absence in another. x ca. 34. 
t=Testes. 
Fig. i.— 
Fig. 2.— 
Fig. 3.— 
Fig. 4.— 
Fig. 5.- 
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Fig. 6.— 
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