MIDLAND NATURALIST 37 
II. Genus, Meyenía, Carter, 1881. 
This genus includes 17 species not counting a number of 
varieties. Seven of the species are North American. 
I. M. leidyi, Carter, so far only found at Philadelphia 
and in New Jersey. 
M. fluviatilis, (Spongilla fluviatilis, of authors) found 
N 
M. robusta, Potts, from California. 
M. millsii, Potts, from Florida. 
M. subdivisa, Potts, from Florida. 
M. baileyi, Bowerbank. West Point, N. Y. 
M. crateriformis, Potts. Pennsylvania. 
M. everettii, Mills. Gilder Pond, Mt. Everett, Mass. 
III. Genus, Heteromeyenia, Potts, 1881. 
In this genus Potts enumerates four species with a few varieties, 
all of which are only so far reported from the U. S. A. 
I. 47. repens, Potts, reported from Lehigh Gap, Pa., 
Lake Hopatcong, New Jersey, and along the eaters 
Coast. 
2. H. argyrosperma, Potts, from Lehigh Gap, Pa., New 
Jersey, and New England States. 
3. H. longistylis, Mills. Sponge unknown but gemmules 
collected by Dr. Wolle at Bethlehem, Pa. 
4. H. ryderi, Potts. This sponge is reported from Florida ` 
to Nova Scotia and from Atlantic Coast to Iowa. I 
found it in St. Joseph River, Indiana. 
IV. Genus. TZubella, Carter, 188r. 
In this genus, we find five species, one of which is represented 
in U.S. A. The other four being found in the Amazon River of 
South America. 
I. T. pennsylvanica, Potts. It is found in Lehigh River 
and generally throughout Eastern U. S. 
V. Genus, Carterius, Potts 1881. 
'This genus contains four species, three of which are found in 
the United States of America. The fourth being found in Russia 
and in Bohemia, but Carter claims that the Russian species is. 
identical with species C. /emosperma of America. 
The American species are: 
. C. tubisperma, (/) Mills, and wasfound on timber in the 
Niagara River, N. Y., and also in a reservoir in 
Boston, Mass. 
DIAN BU 
