316 A. C. Stokes—Fresh water Infusoria. 
edge of the spring-like spiral rests on the anterior border of the 
zooid. Kent’s figure exhibits it correctly as it occurs in the 
present species and the two preceding when about to uncoil 
itself, the spiral then assuming a vertical position, but he re- 
marks that “the longer of the two flagella, as shown in fig. 17, 
is thrown into an elegant spiral coil, reminding the observer of 
the spirally retracted proboscis of a butterfly.” This is assured- 
ly not the case in the three species here described.* The lorica 
and extended animalcule of B. longipes are shown in fig. 4 
Stylobryon A bbotti, sp. nov. 
Lorice conical-campanulate, widest anteriorly, not everted, 
tapering without constriction to the pedicle, twice as long as 
broad, and united to each other by pedicles about one-half as 
long as a single lorica, into the cavity of which they are con- 
tinued, becoming gradually attenuated to their extremity, each 
lorica usually bearing two loricee which are apparently sessile 
on the antero-lateral borders of their supporting sheath ; primary 
foot-stalk about six times as long as a single lorica; enclosed 
)08- 
ual . 
a 
Pond Med attached to filamentous Algz or other fine vege 
This polythecium, unlike that of Stylobryon petiolatum (Duj.) 
S.-K., which it most resembles, is subject to but little variation 
in its mode of colony-building. As shown in fig. | from 
which most of the zooids have been intentionally omitted, 18 
usual method is to erect a cluster of tapering, bell-shaped 
o 
sheath and continuing in this manner until the polythecium B 
fi 
with less than six, neither has it yet been my good fortune to 
* Since writing the above I have seen Prof. Clark’s original article in ~~ 
B. gracillipes, he says: “The only time that the flagellum abandons e artg the 
rocession es = 
and coiled transversely within the calyx close down to the truncate frovt 7. 
body.” And. of the flagellum of B. lacustris he says, “its flexibility is exPN" 
in the same way as in the other species.” _ eee eae ae 
