. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). 1 li <lf i'l 74 INVKliTEliRATM MOIiPHOLOUY. W. OnliT Spiculispongiae. TliG skeletou in the S[»iculis[)()nj^i!i' is occjisionjillj' entirely wuntin^, Jis in tlie {j;enus //iilLsarcd, hut usujilly consists of siliceous s})icul('s usuully tt'truxiiil or rod- or club-shapod, sometimes interlocking with one another so jis to form a firm. Fiu. y?.—A ,I. tipongilla with only a ()s( (from Hcxley). a = iiilialfiil \m\a. c — cilialt'd cliamlic r sucii lliroi
. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). 1 li <lf i'l 74 INVKliTEliRATM MOIiPHOLOUY. W. OnliT Spiculispongiae. TliG skeletou in the S[»iculis[)()nj^i!i' is occjisionjillj' entirely wuntin^, Jis in tlie {j;enus //iilLsarcd, hut usujilly consists of siliceous s})icul('s usuully tt'truxiiil or rod- or club-shapod, sometimes interlocking with one another so jis to form a firm. Fiu. y?.—A ,I. tipongilla with only a ()s( (from Hcxley). a = iiilialfiil \m\a. c — cilialt'd cliamlic r sucii lliroiii;!! d — osculuin. the tissues. skeleton. One of the members of the ;j;i()U]) is tlu; "boriuf^ s[)ou<j;e," C'ltona, which excavates clumnels in and assists in the disintejjjration of oyster-shells, frecjuently attackinjjj the shells of living animals ant I contributing to their destruction. 4. Older Hyalospongiae. The Hyalospongiio are essentially deepsiNi forms, and are characterized by the possession of six-rayed siliceous spicules as skeletal (demiMits. Tin^ .«picuh's may become fused to- gether to form a firm siliceous m^twork having tin; api)»'ar- ance of spun glass, as in the genus I'Jii/tlccfrlld, commonly known as Venus' Flower-baskt't. JieprodKclian ()/' f/ic Pori/cni.—Sexual reproduction occurs probabl}' througlnnit the entire group of the S[)ougeH, the re-. 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 McMurrich, J. Playfair (James Playfair), 1859-1939. New York : H. Holt
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1894
