188 TRIFOPJ-. 



T, M'.I:<'< IN' IT-. ('. P.. Al. PI. :','.. tig. 52. 



Dark chocolate color; \vlirl> aluuit 1 :'>-!"), witli throe BfeHel 

 Mihe(|iial granules. suture excavated, hearing a thread, body whorl 

 with tour series of tubercles, and two or three basal ride's below 

 tin-in. Length. in mill. 



tn 



Generally considered by European conchologists a variety of T. 



perver&m, Linn., and perhaps should be relegated to that species. 



Dark specimens are unicolored, but lighter ones show the sutural 



thread darker whence the name. T. modestum, Ads., appears to 



be the same, and Morch refers here Cerithimn juixil/iim, Pf'r. 



T. Tri:i:i-TiioM^E, Chemn. PL 39, fig. 53. 



Whorls 11, each with a spiral series of large white tubercles, and 

 a much smaller chestnut colored series, forming a band. 



Length, 5 mill. 



West Indies. 



T. mirabilis, Ads., is a synonym. 



T. IM I.KMEDIUS, C. B. Adams. PL 39, fig. f)4. 



Whorls about 12, at first with two, afterwards with three spiral 

 series of tubercles, and three additional less nodulous ridges at the 

 base of the body whorl; reddish brown, with a white spiral band on 

 the lower part of the whorls. Length, 6-8 mill. 



II ', >/ In ili> 9. 



This is T. tiiri-i*-Thomce, d'Orb., not Chem. 



T. ORNATUS, Desh. PL 39, fig. 4(5. 



Triseriately tuberculate, dark brown, with here and there a white 

 tubercle, and the lower series white banded. Length, 7-10 mill. 



If". >7 ///<//<>. 



This and the two preceding species, though nearly related, appear 

 to be distinct ; the present is the most robust of the three. 



Section SV.HAK. Hinds. L844 



T. VITIM A. Hind-. PL :i!>. ti<_r. :.:.. 



Pellucid, yellowi-h white; whorls }~>. -inooth, rounded, with a 



meilian rai-ed line and a smaller one below it. 

 Length, in mill. 



Str'i its of Malacca. 



