140 Records of the Indian Museum. Vers. Vue 
water Sponges, Hydroids and Polyzoa in the ** Fauna of British 
India,’ but it now seems necessary to regard one (Plumatella 
tanganyikae) as the type of a new subgenus. 
I. FREDERICELLA INDICA, Annandale. 
Taken by Mr. Kemp in Malwa Tal, Sat Tal and Naini Tal 
(3,600—6,400 feet) in May. The specimens from the Himalayas 
differ from those on which the. original description of the species 
was based (from lakes in the W. Ghats near Bombay and in 
Travancore) in their much more luxuriant growth. They form 
dense bushy masses, in some cases with vertical branches as much 
as 3°55 cm. long. The type specimens were, however, taken in 
November and were evidently just re-assuming active growth after 
a period of quiescence. 
I have recently (March 2nd, rg12) found this species growing 
with fair luxuriance on the leaves of Vallisneria spiralis in a canal 
at Cuttack in Orissa. Some of the zoaria contained statoblasts ; 
in others they were absent. ‘The ectocyst was paler in colour than 
in Mr. Kemp’s Kumaon specimens. 
2. PLUMATELLA EMARGINATA, Allman. 
Bushy masses of this common and universally distributed 
species were taken in May in Malwa Tal and Bhim Tal. 
3. PLUMATELLA DIFFUSA, Leidy. 
Common in Malwa Tal and Bhim Tal in May: one of the few 
species as yet taken in the plains of North-Western India. 
4. PLUMATELLA ALLMANI, Hancock. 
Taken in Malwa Tal in May by Mr. Kemp and in Bhim Tal 
in October by myself. Specimens from these lakes show every 
gradation between the form originally described by Hancock and 
Allman’s P. elegans ; they possess, however, an apparent peculiar- 
ity in coloration in that the older zooecia are invariably surrounded 
by a band of dark pigment near the middle. 
AFRINDELLA, subgen. nov. 
This subgenus is distinguished from Plumatella (s.s.) by the 
manner in which the orifice is closed when the polypide retracts 
its lophophore. ‘The stiffened ectocyst of the zooecium, instead of 
merging gradually into the much softer and more flexible tentacle- 
sheath, terminates abruptly and the tip of the zooecium therefore 
becomes truncate—as a rule obliquely truncate, because the stiffened 
ectocyst is produced at the dorsal end of the periphery, which is 
oval in outline, further than at the ventral. Immediately follow- 
ing the sharply defined orificial margin thus produced and in direct 
