. Echinoderma of the Indian Museum ... Collected by the Royal Indian Marine Survey ship Investigator. .. . Fig. 28.—Oligometra serripinna. Lateral view of a typical specimen. Two and one half miles southeast of Santapillay ligJit-honse; 7-8 fathoms. —Three specimens; one of these has the processes on the lower pinnules more pronounced than usual, and the synarthrial tubercles prominent. Off the Ganjam Coast (Madras Presidency) ; 15-25 fathoms.—Eight speci- mens ; one of these is peculiar in having P, similar to, and nearly as large as, P.^, which last is somewhat smaller than usual.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectechinodermata, bookye