. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 534. â Collinella inscripta. Sulcastrella clausa. I. fathoms, are a number of cretaceous sponges to which Zittel has given the name of Astrobolia. Cup-shaped sponges having bunches of spicules scattered over the surface, like Setidium (Fig. 536), are unusual among the. Fig. 536. â Setidium obtectum. %â Lithistidse. An interesting lithistid is a small form, Tremcmli- dium, geminum (Fig. 537), in which the pores are replaced by an inward tubular extension of the Please note that these images are

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. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 534. â Collinella inscripta. Sulcastrella clausa. I. fathoms, are a number of cretaceous sponges to which Zittel has given the name of Astrobolia. Cup-shaped sponges having bunches of spicules scattered over the surface, like Setidium (Fig. 536), are unusual among the. Fig. 536. â Setidium obtectum. %â Lithistidse. An interesting lithistid is a small form, Tremcmli- dium, geminum (Fig. 537), in which the pores are replaced by an inward tubular extension of the 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum

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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology