MONILEA-MINOLIA. 263 



M. PRODICTA Fischer. PI. 41, fig. 25. 



Shell small, broadly umbilicated, thin, orbicularly depressed ; 

 whorls 6, the first whitish, shining, the following ornamented with 

 dots of pale chestnut and tawny, separated by linear sutures, terraced 

 above, planulate, carinate, spirally delicately striate ; last whorl 

 dilated, acutely bicarinated, convex beneath, shining, cingulate with 

 articulated lines, with fine radiating and concentric stride ; aperture 

 quadrate, margins acute ; columella almost vertical, a trifle reflexed 

 above ; umbilical area buff, more prominently striate. 



Alt. 4, diam. 7 mill. (Fischer.) 



Port Jackson; N. S. Wales, Audralia. 



Margarita angulata A. Adams, P. Z. S. 1851, p. 190. — Minolia 

 angulata Angas, P. Z. S. 1867, p. 217. — T. proc?id».s Fischer, Coq. 

 Viv., p. 395, t. 118, f. 1. — Watson, Challenger Gasteropoda, p. 72. 



Angulata is several times preoccupied as a specific name in Trochus 

 but not in Minolia nor Monilea ; the orginal description by Adams 

 being wholly insufficient for identification, I prefer to adopt Dr. 

 Fischer's name. 



M. tasmanica Tenison- Woods. PI. 61, figs. 38, 39, 40. 



Shell broadly umbilicate, depressed, with low-conoidal spire, thin, 

 scarcely shining, opaque whitish, upper surface with radiating 

 macalations of purplish or olive-brown, base marbled with the same 

 colors ; apex acute minute ; sutures well impressed ; whorls about 5?, 

 convex, those of the spire subangular in the middle, flattened below 

 the suture, giving the spire a terraced appearance, last whorl sub- 

 cylindrical, obtusely subangular at the periphery, convex beneath ; 

 surface all over encircled by delicate spiral elevated striae, and 

 around the umbilicus decussated by growth lines ; aperture sub- 

 circular, a trifle modified by the contact of the penultimate whorl ; 

 margins all thin, simple ; umbilicus about } the diameter of base, 

 opaque white within, and longitudinally striated. 



Alt. 42, diam. 6 mill. 



Bass' Straits and Long Bay, Tasmania. 



Margarita (3fiiiolia) tasmanica Ten.- Woods, Proc. Roy. Soe. 

 Tasm. 1876, p. 143 (1877). 



Tenison- Woods gives alt. 5, diam. 9 mill, for the dimensions of this 

 species. The tubular whorls, rounded save for a flattened area be- 

 low the suture, and keel-less except for the carina banding that area, 

 will discriminate this shell from many species ; other marks are the 



