MONILEA. 247 



some species are as thin and light as in the closely allied group 

 Minolia. 



The following sections may be admitted : 



^1. Umbilicus with a spiral cord or f'unicle ; Section Monilea. 



B. Umbilicus narrow without spiral funicle. 



a. Shell globose-conic ; columella toothed below ; Section So- 



landeria. 



b. Shell elevated-conic ; columella creuulate, not toothed ; Sec- 



tion Priotrochus. 



Section Monilea s. s. 



M. CALLiFERA Lamarck. PL 41, figs. 1, 2, 3, 4, 5. 



Shell narrowly umbilicate, conoidal, more or less depressed, strong, 

 solid, lusterless, whitish or yellowish, with radiating maculations or 

 stripes above, the base unicolored or obliquely striped, stripes often 

 interrupted ; spire conoidal, apex acute, corneous, sutures impressed, 

 whorls about 6, convex, the last rounded at periphery but often 

 with a tendency to be biangulate there ; densely finely lirate all 

 over, the Yivve very closely and finely beaded by the oblique incre- 

 mental striaj which are prominent in the interliral spaces ; apeilure 

 oblique, rounded-quadrate, conspicuously lirate within, the lir?e ex- 

 tending nearly to the edge of the outer lip, and 10 in number ; col- 

 umella short, ending below in a denticle, concave above and reflected 

 partly over the umbilicus, and over the termination of a strong spiral 

 funicle which almost fills the white umbilicus. 



Alt. 12-14, diam. 18-19 mill. 



Australia; PhUippines ; New Caledonia; Andaman Is. ; Ceylon. 



T. calliferns Lam., An. s. Vert., vii, p. 27. — Delessert, Rec. de 

 Conch., t.'se, I 5.— Philippi, Conchyl. Cab., p. 206, t. 30, f. 13.— 

 Chenu, Man. de Conchyl., p. 362, f 2685. — Fischer, Coq. Viv., p 

 257, t. 86, f. 3. — T. callosus Wood, Index Test., suppl., t. 5, £ 33 

 (not T. callosus Gmel.). — T. masoni G. & H. Neviel, Journ. Asiat. 

 Soc. Bengal 1874, p. 28, t. 1 , f. 1. 



T. masoni jSTevill is figured on j^l. 41, figs. 14, 15, 16, 17. 



Has a stronger spiral funicle within the umbilicus than any 

 other species. There is a considerable degree of variation in the 

 development of this spiral pillar of callous in different individuals. 

 The T. calyculus of Wood (Ind. Testaceo., suppl., pi. 6, fig. 44) may 



