Echinoidea (1903) Echinoidea echinoidea00mort Year: 1903 138 ECHINOIDEA. II. considerably narrovver than iii flavesccns. — In the anterior petals the number of pores in the anterior series is larger than in flavescens, viz. 6—7, whereas in flavesccns of a corresponding size there are onh- 2—6, the nnmber varying rather mnch. As the pore-bearing piates of the petals are rather large, this difference is fairly conspicnons. In the posterior series of the anterior petals and in both series of the posterior petals the nnmber is the same in both species. The odd anterior ambulacrum narrovvs conspic
Echinoidea (1903) Echinoidea echinoidea00mort Year: 1903 138 ECHINOIDEA. II. considerably narrovver than iii flavesccns. — In the anterior petals the number of pores in the anterior series is larger than in flavescens, viz. 6—7, whereas in flavesccns of a corresponding size there are onh- 2—6, the nnmber varying rather mnch. As the pore-bearing piates of the petals are rather large, this difference is fairly conspicnons. In the posterior series of the anterior petals and in both series of the posterior petals the nnmber is the same in both species. The odd anterior ambulacrum narrovvs conspicnonsly where the fasciole traverses it, which is not the case in flavescens; the number of piates within the fasciole is smaller than in flavesccns^ specimens of eqvial size being compared (7 in capense, ca. 10 in flavescens). The tubefeet and their spicules do not present any distinct differences from flavescens; to be sure, I have not seen any such large spicules, as are found in flavescens below the disk, but they are not always met with in the latter species either, and they niay well be found in larger specimens of
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