. Fresh-water biology. Freshwater biology. Fig. 583. Carterius tenosperma. A. Section of gemmule, (a), short tubule; (d), long, slender cirrous appendages. X35. B. Three types of spicules; skeleton spicules; spined gemmule birotulates with burr-like rotules; ends of same; long, spinous, acerate dermal spicules. X 100. (After Potts.) IMPORTANT REFERENCES ON FRESH-WATER SPONGES Annandale, N. 1909. Report on a Collection of Fresh-water Sponges from Japan. Annot. Zool. Japon., 7: 105-112, pi. 2. 1909a. Fresh-water Sponges in the Collection of the United States Na- tional Museum. Part II. Specimens
. Fresh-water biology. Freshwater biology. Fig. 583. Carterius tenosperma. A. Section of gemmule, (a), short tubule; (d), long, slender cirrous appendages. X35. B. Three types of spicules; skeleton spicules; spined gemmule birotulates with burr-like rotules; ends of same; long, spinous, acerate dermal spicules. X 100. (After Potts.) IMPORTANT REFERENCES ON FRESH-WATER SPONGES Annandale, N. 1909. Report on a Collection of Fresh-water Sponges from Japan. Annot. Zool. Japon., 7: 105-112, pi. 2. 1909a. Fresh-water Sponges in the Collection of the United States Na- tional Museum. Part II. Specimens from North and South America. Proc. U. S. Nat. Mus., 37: 401-406. 1910. Fresh-water Sponges in the Collection of the United States National Museum. Part IV. Note on the Fresh-water Sponge Ephydatiajaponica, and its Allies. Proc. U. S. Nat. Mus., 38: 649-650. 1911. Fresh-water Sponges in the Collection of the United States National Museum. Part V. A New Genus proposed, with Heteromeyenia radio- spiculata Mills as Type. Proc. U. S. Nat. Mus., 40: 593-594. 1911a. Fresh-water Sponges, Hydroids and Polyzoa. Fauna British India. 251 PP-, 5 pl- Carter, H. J. 1881. History and Classification of the Known Species of Spongilla. Ann. Mag. Nat. Hist, (5), 7: 77-107, pl. 5-6. Potts, Edward. 1883. Our Fresh-water Sponges. Amer. Nat., 17: 1293-6. 1887. Fresh-water Sponges; a Monograph. Proc. Acad. Nat. Sci., Phila., 39: 158-279, pl. 5-12. 1890. Fresh-water Sponges. Microscope, 10: 140-143, 161-163, 193- 196, 257-263, 307-310; pl- 5-6. Weltner, W. 1895. Spongillidenstudien III. Katalog und Verbreitung der bekannten Susswasserchwamme. Arch. f. Naturges., (pt. I), 61: Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wil
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