68 Macuieay Menmorrat Vouume. 
Genus ROTELLA. 
Rorenta neozELAnica, Hombron and Jacquinot, Voy. Péle Sud, Zool. V. p. 53, pl. xiv. 
figs. 5-6; A. vestearia, Woodward, lc. pl. x. fig. 10. 
Locahty.—Wanganui, Petane, Matapiro. 
Genus TROCHUS. 
Key to the species. 
1. Columella twisted. 
Four spirals on penultimate whorl a 1. L2 viridis. 
Seven or eight Ba F2 Bas ... L5 COntCHS. 
2. Columella not twisted. 
Spirals subequal above the keel fe wee) Ln COM KaLUS: 
Spirals at keel and posterior margin larger... 7. chathamensvs. 
Trocuus viripis, Gml.; Polydonta tuberculata, Gray, Voy. Erebus and Terror, Moll. 
Plax he: 6. 
Locality.—W anganui. 
t= 
Trocuvus conicus, Hutton, Trans. N.Z. Inst. Vol. XV. p. 411. 
(Plate vim. fig. 73.) 
Shell high. Whorls 7, slightly convex, with fine spiral moniliform ribs, 
about 8 on the penultimate whorl. Suture deep. Base with spiral moniliform 
strize, the angle rounded. Axial cavity deep, smooth, conical ; columella with 
a posterior fold. Height 21mm. ; breadth 21mm. 
Locality.—W anganui. 
Trocuus TIARATUS, Quoy and Gaimard, Voy. Astrolabe, Zool. III. p. 256, pl. uxiv. 
figs. 6-11. 
Locality.—Wanganui, Petane, Matapiro. 
