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 



