BY C. HEDLEY. 211 Figs. 23, 24, 25. — Stiva ferruginea, Hedley, and its operculum, as seen from each surface. Figs. 26, 27. — Thraciopsis arenosa, Hedley; exterior of valve and hinge. Fig. 28. — Lima hassli. Ten. Woods; from a recent example. Figs. 29, 80, 31, 82, 33, 34. — Area lischkei, Dunker; adult specimen from the side, within and above; half-grown instance; juvenile specimen and hinge of same. Plate X. Figs. 35, 36, 37, 38. — Chione despecta, Hedley; exterior, interior, superior aspects and hinge. Fig. 39. — Dacrydium fabale, Hedley, from within. Figs. 40, 41, 42, 43. — Philohrya inornata, Hedley; exterior, interior, superior aspects and hinge. Figs. 44, 45, 46, A7.—Philippiella rubra, Hedley; exterior, interior, superior aspects of one individual and hinge of another. Figs. 48, 49, 50. —TerehratuUna radula, Hedley; dorsal, ventral and interior aspects. Appendix. Note on Terebra Hedleyi, Tate. By Edgar A. Smith, Assistant Keeper of Zoology, Natural History Museum, London. In Volume xxvi., p. 214, of these Proceedings, in a note by the late Professor Tate, it is stated that the Cingulina Brazieri of Angas does not belong to that genus but to Terehra, and because Angas's species-name was already in use in the latter genus, it is changed to Hedleyi. The object of the present note is to point out that the shell in question is not a Terehra^ but was rightly placed by Angas in Cinguli7ia, and consequently the alteration in the specific name was altogether unnecessary. The mistake I imagine has arisen through the artist having drawn the type just as he saw it, and not recognising the fact that the outer li"p of the shell had been broken away, thus giving the aperture a somewhat channelled appearance anteriorly, still not so canaliculate as in Terehra. Two specimens of this species were presented to the British Museum by Mr. Angas in 1877, one, the type, being exactly like
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