170 LEUCOTINA. 



Most nearly allied to A. lauta A. Ad. This species is the type of 

 the genus Myonia A. Ad. 



L. ELEGANS A. Adams. 



Shell subulate, thin, semi-opaqiie, graceful. Whorls 6, slightly 

 convex, transversely sulcate, the sulci oblique, distant and punctate. 

 Aperture ovate, acuminate posteriorly ; parietal fold thin, median, 

 oblique ; lip simple. {Ad.^. 



Gulf of Pe- Chili, 5 fms. (Ad.). 



Myonia elegans Ad., Ann. Mag. N. H. (3), viii, p. 241, Sept., 

 1861. 



Most like M. punctigera A. Ad., but more slender and transparent, 

 with longer whorls and a thin inner lip ; the transverse grooves, 

 moreover, are not so coarsely punctate. (Ad.). 



L. sciTULA A. Adams. 



Shell subulate-ovate, white, opaque, shining. Whorls 4, a little 

 flattened, transversely sulcate, the sulci distant, closely punctate; 

 sutures impressed. Last ^vhorl large, elongated. Aperture ovate, 

 dilated in front, acuminate behind; parietal fold conspicuous, 

 oblique, lip simple. (Ad.). 



Mino-Sima, Japan, 63 fms. (Ad.). 



Myonia scitula Ad., t. c, p. 242. 



A small species, somewhat similar in appearance to M. punctigera 

 from the Gulf of Pe-chili, but shorter and more ovate. (Ad.). 



L. MODESTA A. Adams. PI. 49, figs. 8, 9. 



Shell elongate-conic, subpellucid, thin, white. Spire turrited- 

 acute. Whorls slightly convex, transversely sulcate, the sulci equi- 

 distant, punctate; longitudinally striated. Aperture oval; col- 

 umella oblique, uni-plicate. (Ad.). 



Corrigidor 7 fms. (Cuming). 



Actceon modestus A. Ad., P. Z. S. 1854, p. 60. — Tornafella mod- 

 esta Reeve, Conch. Icon, xv, pi. 4, f. 20. 



This is an elongated, semipellucid species, resembling more a 

 Monoptygma than an Actceon, with the spire elevated, and the plait 

 on the columella near the hind part. (Ad.). 



L. ESTHER Angas. PI. 49, fig. 19, 



Shell ovate, rather solid, scarcely rimate, whitish : whorls five, 

 transversely grooved and crossed with very fine longitudinal lines; 



