242 Proceedings of Indiana Academy of Science. 
(1901), when the bottom near the shore was seen to be covered with 
small whitish mounds about the size of buckshot, which gave a peculiar 
mottled or dappled appearance. When some of this mud was dipped up 
and examined the small mounds were seen to be small sand tubes in 
which the worms were and from which they waved about in graceful 
undulations. They were observed again at the same place on June 15. 
On June 18 many were seen in the creek under the railroad bridge, and 
on June 25 some were noted at the south end of Lake Maxinkuckee. 
And finally, on November 4 (1904), numerous burrows were seen in 
shallow water near shore in Lost Lake. 
Thorn-head worms (Acanthocephali) were found to be common in- 
testinal parasites of various fishes and turtles. Among fishes the redeye 
appeared to be most affected. The carnivorous turtles, such as the soft- 
shelled and the snapper, were especially subject to them, while the herb- 
ivorous species, particularly the painted turtle, were comparatively free. 
Record may here be made of a Bryozoan, Plumatella polymorpha, 
possibly related to the Gephyrean worms. Plumatella polymorpha is a 
compound animal, many individuals budding off from one another, as 
in plants. The moss-like colonies of this species were very common in 
the lake among the Chara and other plants. They were noted in the 
Chara near the depot pier, off Long Point, near Winfield’s, and at the 
south end near the Farrar cottage. Indeed, it appears to be distributed 
generally through the lake wherever there are patches of vegetation. 
Among the Charas it forms a brown, upright, bushy growth. In the 
Weedpatch it was common on the leaves of Potamogeton amplifolius. 
On October 23 (1900) it was found to be abundant on Ceratophyllum 
in rather deep water. A week later (October 29) a good deal was gotten 
on Myriophyllum. Early in the spring (March 1, 1901), it was seen 
growing on Potamogeton robbinsii, and a little later it was found in 
abundance in front of Arlington station. It was often found on Chara 
and other aquatic plants dredged at various times. It was also found 
growing on tile piles September 1 (1906). 
During the autumn of 1900 the stadioblasts were frequent in plankton 
scum along shore, often being present in great abundance. They some- 
what resemble floating sand grains, but are lighter in weight, being 
minute circular brown discs, uniform in shape and size. Under mag- 
nification they show series of facets like the compound eye of insects. 
On October 18 (1900), one of the buoys which had been for some 
time anchored out in the lake was found to be covered with a flat, 
creeping growth of this species. 
As Plumatella polymorpha occurs in this lake it is highly worthy of 
its specific name, as it shows great variation in form and general 
appearance. 
