TURCICA. ^ 417 



T. ELisA Gould. PI. 67, figs. 67, 68, 69, 74. 



Shell thick, solid, acutely conical, the spire elevated with straight 

 lateral outlines, the base convex, imperforate ; color whitish-ashen. 

 Surface dull ; apex minute, its tip subimmei-sed, apical whorl smooth, 

 the rest of the Avhorls (7 to 8 in all) traversed spirally by three 

 strong cords, the central one narrowest, all closely beaded by the 

 decussation of close, regular, elevated lamellae of increment, which 

 sharply sculpture the interstices. Two lamellae arise from each bead 

 of the superior spiral cord. The sutures are very deeply, narrowly 

 channelled. The last whorl is angled at the periphery, and bears 7 

 concentric lir?e on the base, the inner ones smaller ; the whole closely 

 sharply sculptured by radiating lamellae. Aperture very oblique, 

 subquadrate with about 9 sharp entering lirpe ; outer lip beveled, 

 columella short, subvertical, cylindrical, with three or four small, 

 transverse, rather acute folds on the lower half. 



Alt. 19, diam. 13 mill. 



Singapore ; China. 



Trochas elisus Gould, Proc. Bost. Soc. N. H. iii, p. 92, 1849 ; U. 

 S. Expl. Exped. Moll, p. 178, atlas, fig. 216. 



The specimen described and figured by Gould was evidently a 

 young shell. The species is known by the three spirals of the spire 

 whorls and the several small folds of the columella. 



T. MAcuLATA Brazier. PL 67, fig. 78. 



This species is similar to T. elisa Gld., but has four revolving 

 cinguli on each whorl of the spire instead o? three, and different col- 

 umellar edge. 



Shell conical, with elevated spire, its outlines straight. There 

 are about 8 whorls, each one encircled by 4 spirals, the upper and 

 lower ones more prominent ; these are closely, regularly set with 

 compressed granules, caused by the decussation of elevated regular 

 lamellse of increment, which cut the inter-liral spaces into little pits. 

 The sutures are deeply, narrowly channelled ; the base is convex, 

 with 7 or 8 concentric line, interstices clathrate. The aperture has 

 about 11 elevated lines within ; outer lip beveled, its acute margin 

 crenulated, columella short, subvertical, with traces of two obtuse, 

 nearly obsolete, blunt tubercles in the middle. The color is whitish, 

 sparsely spotted with brown, especially on periphery and base. 



Alt. 14, diam. 11 mill. 



C'rtjije York, N. Australia, 11 fms. ; Off Katow, N. Guinea, 8 fras. \. 

 Warrior Reef and Darnley Id., Torres Straits, 8-30 fms. 

 27 



