178 
SYDNEY .1. HICKSON AND .1. T. WADSWORTH. 
and very little practical value. Joseph (18) has shown 
that there is a great range of variation in the number of 
inicronuclei in the Ciliate Loxodes, and it is clear from this 
and from other evidence that it is not safe to base specific 
differences on the number of the micronuclei. 
SuMMAKY OF KeSULTS. 
Specimens of Uendrosoma Avere found in the Bridgewater 
canal attached to C ordy lophora, Polyzoa, and Aveeds. They 
differ in some respects from the type of Dendrosoma 
radians, and may be regarded as constituting a distinct 
race. 
The meganncleus does not extend to the extremity of the 
arms as pre\dously described and figured. It has no true 
nuclear membrane and no linin or plastin supporting netAvork, 
but consists of numerous chromatin granules, “ chromidia,” 
floating freely in a nuclear sap. 
There are numerous micronuclei, usually about 4 g in 
diameter, Avhich divide by mitosis. Beproduction is effected 
by the formation of internal buds, “ gemmulm.” They are 
plano-convex in form, 85'5 x 41 g in diameter, have several 
contractile A'acuoles and a broad band of cilia. The descri])- 
tion of these gemnmlm given in this paper differs in some 
respects from that of previous authors. 
The gemmula3 of Lernmophrya are also described. 
The development of the gemmuhc of Dendrosoma is 
described. 
ddie “external buds’^ of Saville Kent are proved to be 
epizoic Acinetaria belonging to the species Urnula epi- 
s t }■ 1 i d i s . 
Litekatl'ke. 
1. AAverinzeAv, S. — “ Astrophrya areiiaria,” ‘ Zool. Aiiz.,’ xxvii, ia04. 
p. 42.5. 
2. Biitsclili, (). — “Protozoa. Abt. iii. Infusoria," in Bronn’s • Klassen 
u. Ordnnngen.’ Leipzig, 1887-89. 
