A treatise on zoology . >) transversely elongate at riglit angles to main food-groove, and confined to inner. Amb Fig. XLV. Protocrinus oviformis, after Volborth. 1, oral surface, showing food-grooves partly coveredby ambulacrals, x 3; 2, aboral surface of young individual, showing stem-attachment; 3,aboral surface of oldindividual, without stem.

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology