1910. | N. ANNANDALE: Phylactolematous Polyzoa. 39 
The Cristatellidz consist of a single genus and probably of a 
single species (Cristatella mucedo), which, so far as is at present 
known, is confined to Europe and North America. Both the 
Fredericelune and the Plumatelline are, however, represented 
in India. The former subfamily consists of a single genus, in which 
four species can now be distinguished ; while seven genera, five of 
which have been recorded from India, constitute the Plumatelline. 
Family PLUMATELLIDZ. 
Subfamily Fredericelline. 
Genus FREDERICELLA, Gervais. 
Zoecva cylindrical, each arising directly from another. Zoariuim 
recumbent or, more usuaily, with upright branches. Statoblasts 
flat, oval or kidney-shaped, surrounded by a stout chitinous ring. 
Polypide slender and elongate; the tentacles of the lophophore 
filiform, not very numerous. 
Until recently, although several distinct phases or varieties 
had been described as species, it was only possible to recognize 
a single form as worthy of specific rank, namely the Holarctic 
F. sultana (Blumenbach). Four species may, however, now be dis- 
tinguished, although they are all closely allied to one another and 
might perhaps be regarded rather as local races or subspecies. 
They are F. sultana (Europe, N. America, N. and S. Africa), F. 
australiensis ' (New South Wales), F. indica (Western India) and 
F. cunningtomi” (Lake Tanganyika, Central Africa). The following 
key will serve to distinguish them .— 
Key to the species oj Fredericella. 
A. Ectocyst never heavily encrusted. 
a. Statoblast smooth on both sur- 
faces. 
a, Lophophore circular .. F. sultana. 
a’. Lophophore oval .. F. australiensis 
a’. Statoblast with minute promin- 
ences on the upper surface. 
Lophophore circular ia esondica. 
B. Kctocyst heavily encrusted with sand 
grains. 
Lophophore circular; zocecium 
short (statoblast unknown) .. F. cunningtont. 
Fredericella indica, Annandale. 
Rec. Ind. Mus., iii, p. 373, fig. (1909). 
To my recent description of this species I need only add that 
the lophophore is accurately circular when fully extended. The 
! Goddard, Proce. Linn. Soc. N. S. Wales, XxXXiv, p. 489, pl. xlvii (1909). 
> Rousselet, Proc. Zool. Soc. London, 1907, p. 254, pl. xv, figs. 9, 10. 
