PLANCHE III

. 18.—Ophiacantha vestita Kæhler, face dorsale. Gr. =7

. 19.—Ophiacantha vestita, face ventrale. Gr.=7,

o, 20.—Ophiacantha vestita, piquants du disque. Gr.=10. œ. 21.—Ophiomusium scalare Kæhler, face ventrale. Gr.=6. . 22.—Ophiomusium elegans Kæhler, face dorsale. Gr.=—9. œ. 23.—Ophiomusium elegans, face ventrale. Gr. =9.

œ, 24.—Ophiomusium elegans, face latérale d'un bras. Gr.=9. . 25.—Ophiopeza custos Kæœhler, face dorsale. Gr.=9.

. 26.—Ophiopeza custos, face ventrale. Gr.—9. prr0} ;

Echnoderma Mus. md. Imvestisator Opluuroidea. Plate 111

18,19, 20, Ophiacantha vestita Koehler. 21, Ophiomusium scalare Koehler 88, 83, à4, Ophomusium elefans Koehler 25,26, Ophiopeza custos Kochler.

R.Koehler, del,

Photo-etchm£, Survey of India Offices, Calcutta, August, 1898