48 SEGUENZIA. 



S. RETICULATA, Phil. PI. 8, figs. 84, 85. 



Umbilicatecl, troohiform, periphery acutely angulated, ele- 

 gantly granularly reticulated, base smoo'.h, obsoletely cingulated 

 at tlie peripLer}'. Diam. 2*5 mill. 



Portugal; o^ Ascension I.; West Indies. 



Fossil, pliocene of Calabria. 



It is Trochus {Solariella) Lusifanica^ Fischer. 



S. LAXA, Jeffreys. PI. 8, figs. 8G, 87. 



Shell consisting of scarcelj^ two whorls, which are c} lindrical 

 and scalariforra, regularly spirally striated ; month nearly de- 

 tached, quadrangular, a little produced at the base; umbilicus 

 narrow and deep. Length, 6 mill. 



Atlantic (Porcupine Exped.). 



Only a fragment obtained. Its generic position is very doubt- 

 ful. 



S. DELiCATULA, Dall. (unfigurcd). Gulf of Mexico. 



