ETHALIA-ISAXDA. 463 



DILLWYXELLA MODESTA Dall. (PL 48, figs. 8, 9.) Ibid., p. 862, t. 



21, f. 3. 



Off Santa Lucia, 226 fms. 



ROTELLA CRYPTOSPIRA Verrill, Trans. Conn. Acad. vi, p. 241 1 

 1884. 



Of Cape Hatteras, 142 fms. 

 ETHALIA MULTISTRIATA Verrill, Trans. Conn. Acad. vi, p. 242. 



Off Cape Hatteras, 142 fms. 

 ROTELLA SEMISTRIATA Orbigny, Moll. Cuba, atlas, t. 18, f. 20- 



22. (Pseudorotella.) 



ETHALIA RUFULA Gould, Proc. Bost. Soc. N. H. viii, p. 17, 1861. 



Oosima, Japan. 

 ETHALIA CAPILLATA Gould, 1. c., p. 17. 



Coast of China, 23 30' N. lat., in 25 fms. 

 These two unfigured species may belong to true Ethalia. 



Genus ISANDA H. & A. Adams. 



Isanda ADS., P. Z. S. 1853, p. 189 ; Genera Rec. Moll, i, p. 409. 



A group of small, compact, polished, porcelaneous little shells 

 with crenate-margined umbilicus, not covered by any reflection or 

 callus of the columellar lip. The operculum is corneous, multi- 

 spiral. The interior has a very thin nacreous layer. I unite 

 Umbonella as subgenus or section. 



I. CORONATA A. Adams. PL 59, figs. 56, 57, 58 ; pi. 57, fig. 12. 



Shell small, umbilicated, depressed-turbinate, solid, polished, 

 pinkish-white, with oblique, undulating grayish-pink longitudinal 

 stripes ; spire low, conic ; apex acute ; sutures deeply channelled, 

 bordered by a corona of tubercles or beads ; whorls 5, the last large, 

 rounded or subangular at the circumference, convex beneath ; 

 aperture higher than wide, slightly oblique, quadrangular; um- 

 bilicus very deep, rather cylindrical, bordered by a deeply crenated 

 white marginal rib, with a narrower beaded cingulus just outside 

 of it. Alt. 3?, diam. 4 mill. ; diam. of umbilicus 1 mill. 



Port Curtis and Torres Sts., N. Australia; S. Australia. 



Isanda coronata AD., P. Z. S, 1853, p. 189 ; 1. c. 1854, t. 27, f. 5 ; 

 Genera, t. 46, f. 2. CHENU, Manuel, fig. 26l6. Trochus (Isanda) 

 coronata Ad., E. A. SMITH, Zool. Coll. H. M. S. Alert, p. 71, t. 5, 

 f. P./. lepida A. AD., P. Z. S. 1853, p. 190. 



