TROCHUS. 51 



Of this form Tenison- Woods says : A rather thin depressedly 

 conical shell, acutely angulate at the base, which is flat, granular, 

 with oblique microscopic strife between ; pale brownish red ; larger 

 than any of our species except the tw r o preceding, 18 to 20 mill. diam. 

 whorls 5. I cannot distinguish this shell from C. zebrides of the 

 same author. Tasmania ; S. Australia. 



Tapparone-Canefri has figured this species. The British Museum 

 specimens are said to be more vividly colored than his examples. 

 His figure is copied on pi. 14, fig. 19. 



T. UNDATOIDES Tenison-Woods. PI. 13, figs. 99, 100. 



Shell turbinately conoid, rather small, somewhat solid, opaque, 

 reddish rose with indistinct purple spots ; whorls 5, flat increasing 

 rapidly, margined below, girdled with 6 series of rounded granules, 

 of which the lowest line is the smallest, and increasing gradually in 

 size to the suture, which is coronate and broadly canaliculate ; the 

 base is flattened, ornamented with 8 spiral lines of close rose colored 

 granules ; aperture rhomboid, with a thickened labrum, which is 

 lirate inside ; columella with two obtuse, blunt tubercles above and 

 below, and intermediate small obsolete teeth ; umbilicus narrow, 

 white, with a rather conspicuous white margin. 



Alt. 10, diam. 10 mill. ( Tenison- Woods.) 



Dredged near "Sow and Pigs," Port Jackson N. S. Wales. 



Clanculus undatoides, TEN.-WOODS, Proc. Linn. Soc. N. S. W. 

 iv, p. 22, (1880.) 



In shape and appearance this shell is a little like C. undatus 

 Lam., but is smaller and the whorls flat. (Tenison- Woods.) 



T. MAXILLATUS Menke. PL 42, figs. 17, 18. 



Shell orbiculate-convex, pale brown, obscurely punctate-articulate, 

 or black, transversely granulate-cingulate ; whorls nearly plane, the 

 last subangular, base plane ; cinguli above 6, granose, beneath 7, 

 smooth ; umbilical cavity with crenate margin ; aperture rhomboidal, 

 ringent ; outer lip with 6 teeth, the upper one largest ; basal tooth 

 of the columella large, obtuse, bifid, three on the columella margin. 

 (Philippi.) 



Also a very distinct species, allied to T. corallinus Gm. by its size, 

 the grains on the margin of the umbilicus, and the large bifid tooth 

 on the end of the columella ; but it is more depressed, the base is flat, 

 the granose lirse are narrower, their interstices showing fine oblique 

 striie under the lens ; the teeth inside the outer lip are fewer in 



