Zoology. 73 
Forms like Figs. 11 and 12, Pl. 20, are not uncommon in 
sphagnum swamps, associated with H. papilio and H. elegans. 
Hyalosphenia elegans, Leidy. Page 140, Pl. 20. 
This beautiful species does not seem to be so common as H. 
papilio, but is quite plentiful. 
Nebela collaris. Page 145, Pls. 22-24. 
The specimens observed from one sphagnum swamp were in form 
like Fig. 17, Pl. 22, but sculptured more like Fig. 14. Other 
specimens like Fig. 14, with encysted sarcode, were seen. 
Nebela flabellum, Leidy. Page 152, Pl. 23. 
Forms like Fig. 18, Pl. 23, are not uncommon in sphagnum 
waters about Orono. 
Heleopera pieta, Leidy. Page 162, Pl. 2 
Forms like Fig. 8, Pl. 26, are che stent in sphagnum 
waters about Orono. 
Arcella vulgaris, Ehrenberg. Page 170, Pls. 27, 28. 
Clear individuals like Fig. 4, Pl. 27, were seen, also dark-colored 
forms flattin in shape, but probably referable to a species. 
Arcell discoides, Ehrenberg. Page 173 
e specimens observed were like the clear individual, Fig. 29, 
Pl. 28. No colored forms were seen 
Centropyxis aculeata, Ehrenberg. “Page 180, Pls. 30, 31, 32. 
Forms like Fig. 30, Pl. 32, with five spines, somewhat more 
slender and shorter, were in a gathering from a sphagnum swamp 
on College farm. 
mpascus. New variety. 
Forms like Figs. 2 and 3 in outline are not uncommon in sphag- 
num water. The shells are brownish and membranous, and, so far 
as observed, probably empty. They have the best neck of Cam- 
pascus, but ‘differ very much in the emorginoli fundus from C. 
cornutus. The specimens are about the same size as C. cornutus 
but somewhat variable, as shown by figures. There is nothing 
like it figured in Leidy’s vie pia It is probably another form 
of this polymorphous spec 
_ Englypha alveolata, Du J ladia. Page 207, Pl. 25. 
" The Leg forms common in springs and ‘also sphagnum water 
about Oron 
Englypha ciliata, Ehrenberg. Page 214, Pls. 35, 36. 
Spineless forms like Fig. 23, Pl. 36, found in sphagmoss in a 
amarack swamp. 
Ciliated forms like Fig. 20, with plates barely visible, and with 
ri nuclei situated as in Fig. 4, but smaller. Sphagnum swamp, 
rono 
The typical forms common in springs, and also sphagnum water 
about Orono. 
Assulina seminulum, Ehrenberg. Page 225, Pl. 37. 
Forms like Figs. 15 and 24 are found sparingly i in sphagnum 
moss in Tamarack swamps about Orono. 
