TIRRITEILA. 201 



T. RUBESCENS, Reeve. PI. 61, fig. 62. 



Aciiminately turreted ; whorls 13. spirally closely ri<lge(l and 

 striated, the first few whorls keeled in the middle, keel quickly 

 vanishing; light red. Length, -65 inch. 



Bay of 3Iontija, West Columbia. 



All the whorls are somewhat prominent in the middle, occupied 

 by the keel in the first few whorls. 



The above is Reeve's description of a young shell which does 

 not appear to possess any special characteristics ; it willpossibl}' 

 prove identical with one of the larger species from the same 

 region, 



T. FLAMMULATA, Kiener. PI. 62, fig. 73. 



Whorls 18, the earlier ones two-ridged, the rest convex, seven- 

 ribbed, the middle ribs broader; fulvous white, stained with rose, 

 dotted and clouded with chestnut, ba^e rose color. 



Length, 2T5 inches. 



West Africa. 

 T. TORCLOSA, Kiener. PI. 62. fig. 74. 



Whorls 15, flatly convex, the earlier ones two-ridged, after- 

 wards becoming four-ridged, ridges obsoletely granulated, two 

 lower ones alwa3's the most prominent, interstices closely spiralh' 

 striate ; light 3ellowisb white dotted and longitudinally flamed 

 with light chestnut. Length, 3 inches. 



? Bed Sea. 



Is possibly a mere variet}- of the following species. 



T. TRisuLCATA, Lam. PI. CiS, fig. 75. 



Whorls about 18, conspicuously three-ribbed, the intermediate 

 grooves hollowed, striated; whitish, violaceous towards the apex, 

 sparsel}' longitudinally fiamed with chestnut. 



Length, 2*5 inches. ' 



Bed Sea. 

 T. RADULA, Kiener. PI. 63, tig. 77. 



Whorls about 22, doubly ridged above and below, the wide 



intermediate space concave, striated, ridges, except the lowest, 



rather obsoletely granose, last whorl sometimes lamellated ; 



light brownish, spotted, stiigated and flamed with chestnut. 



Length, 2 "7 5 inches. 



Bay of Guayaquil. 



