262 MONILEA-MINOLIA. 



M. UNICARINATA Fischer. Unfigured. 



Shell small, umbilicate, orbicular-conoid ; apex acute, whorls 6, 

 planulate, separated by linear sutures; the first whitish, remainder 

 white and ashen clouded, spirally granose lirate, lirse narrow, 5 on the 

 penult, whorl, the interstices wider, and often with an intermediate 

 lirula; last whorl acutely carinated, maculate at the periphery 

 with white and chestnut, convex beneath, white and ashen tes- 

 sellated, concentrically lirate, lirse about 12, the central ones closer 

 and wider ; aperture subquadrate, margins thickened, plicate ; 

 columella oblique ; umbilical area white concave, spirally plicate- 

 fimiculate, subcrenate outside. Alt. 4, diam. 7 mill. (Fischer.') 



Australia (Quoy & Gaimard). 



T. unicarinatus FISCHER, Journ. de Conchyl. 1879, p. 23. 



Described from a single specimen in the Paris Museum. " Allied 

 to T. preissianus, but differs in being smaller, with narrower aper- 

 ture, acutely carinated periphery, flat whorls, etc." 



M. RHODOMPHALA Souverbie. PI. 41, figs. 22, 23, 24. 



Shell umbilicated, depressed-orbicular ; spire subelate, apex 

 obtuse, carinate, radiately very delicately striate, spirally, regularly 

 impressed-striate ; white, spotted in various ways with rosy and 

 yellowish, a broad rosy-tinted umbilical tract; whorls 6, convex, 

 separated by impressed sutures, above radiately subplicatulate- 

 striate ; last whorl more or less obtusely carinated, the umbilical 

 region broadly funnel-shaped, subplicate-striate ; aperture pearly 

 within, oblique, subrhombic-rounded, the margins joined by a thin 

 callous, right margin acute, columellar margin much thickened, at 

 the umbilicus narrowly reflexed ; umbilicus moderate, very pro- 

 found. Alt. 8, diam. 5 mill. (Fischer.) 



Lifou, Loyalty Archipelago. 



T. (Monilea) rhodomphalus SOUVERBIE, Jo^rn. de Conchyl. 1875, 

 p. 36, t. 4, f. 3. FISCHER, 1. c. 1878, p. 210 ; and Coq. Viv., p. 392, 

 t, 117, f. 3.; T. rotellceformis PHILIPPI Conchyl. Cab., p. 302, f. 44, 

 f.2. 



A small, depressed, shining, porcellaneous shell, remarkable for 

 its bright rose-colored umbilical tract. (Fischer.) 



There is not much doubt that this is the same as Philippi's I. 

 rotellceformis (pi. 61, figs. 21, 22, 23). The latter name of course has 

 priority. 



