144 SYDNEY ,T. HICKSON AND J. T. AYADSWOETH. 
water canal. The genus may be distinguished from Dendro- 
soma by its small size, by the shortness and unbranched 
character of the processes that bear the suckers and by 
other chai’acters which are described later (p. 174) (fig. 46). 
The genus Lernaeophrya was found by Perez (25) 
attached to Cordylophora in the docks at Bordeaux. We 
have also found it associated with Cordylophora in the 
material from the Bridgewater canal. It varies in size, but 
is usually larger than Trichophrya. It has short, un- 
branched arms and remarkably long suckers (fig. 48). In 
other respects also it appears to be distinct from Dendrosoma 
and other genera (see p. 176). 
The genus Bendrosomides of Collin (17) was found on 
the thoracic appendages of Eupagurus cuanensis. It 
appears to have some affinities with Dendrosoma, but on the 
whole it seems to be more closely related to the Ophryo- 
dendrime. 
The genus S taurophry a,^ Zacharias, is a free fresh- 
water form, with short arms, long non-capitate tentacles. 
Its affinities are obscure. 
There is very little information at present as to the 
geographical distribution of Dendrosoma. All that can be 
said is that it has been found in Europe and in the United 
States of America. According to Ehrenberg it is found on 
Ceratophy Hum, Callitriche, and on dead leaves. Kent 
found it on Anacharis, Myriophyll u m , and other aquatic 
plants. Leidy (22) states that it is found in America on 
Ceratophyllum, and attached to the rotifer Limnias 
socialis. Stein (27) briefly refers to a species, Deudro- 
soma astaci, attached to the appendages of the fresh-water 
crayfish. As suggested by Kent it is very probable that this 
is the same species as D. radians. 
' The only account of this genus we luive found is in Deluge’s and 
Herouard's ‘ Protozoaires,’ p. 514. 
