MONILEA-MIXOLIA. 265 



zones alternating with white punctate with rosy ; surface of the base 

 of the last whorl ornamented with regularly radiating costiform 

 white maculations. Alt. 2, diam. 3 mill. (Caramagna.) 



Assab, Red Sea. 



Gibbula de Gregorii CARAMAGNA, Bull. Soc. Mai. Ital. 1888, p. 

 130, t. 8, f. 7. 



M. BICARIXATA Adams & Reeve. PL 59, figs. 51, 52. 



Shell depressed-orbicular, very widely umbilicated ; apex acute ; 

 whorls spirally bicarinated, the carinse distant, interspaces concave, 

 spirally closely lineated, concentrically striated ; brownish or yellow- 

 ish, variegated with reddish flammules ; carinse obliquely artic- 

 ulated with red ; throat iridescent. (Ads. & Rve.} 



Eastern Seas. 



Margarita biearinata ADS. & RVE. Zool. Voy. H. M. S. Samaraug, 

 Mollusca, p. 49, t. 11, f. lla, b. 

 M. TIGRINA H. & A. Adams. Unfigured. 



Shell globose-conical, perspectively umbilicated ; whorls 5?, smooth, 

 the superior ones bicingulate, the last whorl multi-cingulate, cinguli 

 stronger above, closer and smaller beneath ; umbilicus with con- 

 centric crenulated line within ; aperture subquadrate-orbicular, 

 inner lip nearly straight, posterior margin of outer lip subangulate; 

 white, closely painted longitudinally with wide brown stripes. 



(H.&A.Ad.) 



Habitat unknown. 



Minolta tigrina ADS., P. Z. S. 1863, p. 433. 



M. BIANGULOSA A. Adams. PL 37. fig. 7. 



Shell orbicular-conical, broadly umbilicate, smooth, brown, 

 closely painted with longitudinal undulating lines ; whorls planu- 

 late, angulate above, the last biangulate ; sutures margined ; base 

 convex, concentrically cingulate ; umbilicus perspective, its margin 

 crenulated, its interior elegantly decussated by transverse and 

 radiating lines. (A. Ad.) 



Siam. 



Margarita biangulosa A. AD., P. Z. S. 1854, p. 40. Margarita 

 trianyulosa SoWEBBY, in Reeve Conch. Icon., f. 26. 



M. SOLARIIFORMIS Sowerby. PL 67, fig. 73 ; pi. 39, figs. 44, 45. 



Shell orbicular, sublenticular, very thin ; whorls 5, smooth, sub- 

 planulate, spirally very finely striate, pallid, painted with a very 



